Asus M4A785-M - Motherboard - Micro ATX Specifications

Motherboard
M4A785-M
E4937
First Edition V1
August 2009
Copyright © 2009 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless
such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
copyrights of their respective companies, and are used only for identification or explanation and to the
owners’ benefit, without intent to infringe.
ii
Contents
Notices.......................................................................................................... vi
Safety information...................................................................................... vii
About this guide........................................................................................ viii
M4A785-M specifications summary............................................................ x
Chapter 1:
Product introduction
1.1
Welcome!....................................................................................... 1-1
1.3
Special features............................................................................. 1-1
1.2
1.4
1.5
Package contents.......................................................................... 1-1
1.3.1
1.3.2
1.7
Motherboard overview.................................................................. 1-6
1.5.1
Placement direction......................................................... 1-6
1.5.3
Motherboard layout.......................................................... 1-7
1.5.4
1.6.1
1.6.2
Installing the CPU............................................................ 1-8
Installing the heatsink and fan....................................... 1-10
1.7.1
Overview.........................................................................1-11
1.7.3
Installing a DIMM........................................................... 1-17
1.7.4
Memory configurations................................................... 1-12
Removing a DIMM......................................................... 1-17
Expansion slots........................................................................... 1-18
1.8.1
Installing an expansion card.......................................... 1-18
1.8.3
PCI slots......................................................................... 1-18
1.8.4
1.10
Layout contents................................................................ 1-7
System memory.......................................................................... 1-11
1.8.2
1.9
Screw holes..................................................................... 1-6
Central Processing Unit (CPU).................................................... 1-8
1.7.2
1.8
Innovative ASUS features................................................ 1-3
Before you proceed...................................................................... 1-5
1.5.2
1.6
Product highlights............................................................ 1-1
1.8.5
Configuring an expansion card...................................... 1-18
PCI Express x1 slot........................................................ 1-18
PCI Express x16 slot...................................................... 1-18
Jumpers....................................................................................... 1-19
Connectors.................................................................................. 1-20
1.10.1
1.10.2
Rear panel ports............................................................ 1-20
Internal connectors........................................................ 1-23
iii
Contents
1.11
Software support......................................................................... 1-30
1.11.1
1.11.2
Chapter 2:
2.1
ASUS Update utility......................................................... 2-1
2.1.3
ASUS CrashFree BIOS.................................................... 2-3
2.2.1
BIOS menu screen........................................................... 2-5
2.2.3
Navigation keys................................................................ 2-5
2.2.5
2.2.6
2.2.7
2.2.8
2.2.9
Menu items...................................................................... 2-6
Submenu items................................................................ 2-6
Configuration fields.......................................................... 2-6
Pop-up window................................................................ 2-6
Scroll bar.......................................................................... 2-6
General help.................................................................... 2-6
2.3.1
System Time.................................................................... 2-7
2.3.3
Primary IDE Master/Slave, SATA 1~6.............................. 2-7
2.3.4
2.3.5
System Date.................................................................... 2-7
SATA Configuration.......................................................... 2-8
System Information.......................................................... 2-9
Advanced menu............................................................................ 2-9
2.4.1
JumperFree Configuration............................................... 2-9
2.4.3
Chipset........................................................................... 2-13
2.4.2
2.4.4 2.4.5
2.4.6
CPU Configuration......................................................... 2-12
Onboard Device Configuration....................................... 2-14
PCIPnP.......................................................................... 2-15
USB Configuration......................................................... 2-15
Power menu................................................................................. 2-16
2.5.1
2.5.2
iv
Menu bar.......................................................................... 2-5
Main menu..................................................................................... 2-7
2.3.2
2.5
ASUS EZ Flash 2............................................................. 2-2
BIOS setup program..................................................................... 2-4
2.2.4
2.4
BIOS information
2.1.1
2.2.2
2.3
Support DVD information............................................... 1-30
Managing and updating your BIOS............................................. 2-1
2.1.2
2.2
Installing an operating system....................................... 1-30
Suspend Mode............................................................... 2-16
ACPI 2.0 Support........................................................... 2-16
Contents
2.5.3
ACPI APIC Support........................................................ 2-16
2.5.5
HW Monitor Configuration.............................................. 2-17
2.5.4
2.6
2.5.6
2.6.1
Boot Device Priority....................................................... 2-18
2.6.3
Security.......................................................................... 2-19
Boot Settings Configuration........................................... 2-18
Tools menu.................................................................................. 2-20
2.7.1
ASUS EZ Flash 2........................................................... 2-20
2.7.3
AI NET 2........................................................................ 2-21
2.7.2
2.8
Anti Surgy Support......................................................... 2-17
Boot menu................................................................................... 2-18
2.6.2
2.7
APM Configuration......................................................... 2-16
Express Gate................................................................. 2-21
Exit menu..................................................................................... 2-22
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference, and
•
This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Consult the dealer or an experienced radio/TV technician for help.
•
Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modifications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://green.asus.com/english/REACH.htm.
DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.
vi
Safety information
Electrical safety
•
•
•
•
•
•
•
To prevent electric shock hazard, disconnect the power cable from the electric outlet
before relocating the system.
When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service
technician or your retailer.
The optical S/PDIF is an optional component (may or may not be included in your
motherboard) and is defined as a CLASS 1 LASER PRODUCT.
INVISIBLE LASER RADIATION, AVOID EXPOSURE TO BEAM.
•
•
•
Never dispose of the battery in fire. It could explode and release harmful substances into
the environment.
Never dispose of the battery with your regular household waste. Take it to a hazardous
material collection point.
Never replace the battery with an incorrect battery type.
• RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
• DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY-RELATED
INSTRUCTIONS.
vii
Operation safety
•
•
•
•
Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.
Before using the product, ensure that all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
This motherboard should only be used in environments with ambient temperatures between
5ºC (41ºF) and 40ºC (104ºF).
•
•
Place the product on a stable surface.
If you encounter technical problems with the product, contact a qualified service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and configuring the
motherboard.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Product introduction
•
viii
This chapter describes the features of the motherboard and the new technology it
supports.
Chapter 2: BIOS information
This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying to complete a task.
CAUTION: Information to prevent damage to the components when trying to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Where to find more information
Refer to the following sources for additional information and for product and software
updates.
1.
ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2.
Optional documentation
Your product package may include optional documentation, such as warranty flyers,
that may have been added by your dealer. These documents are not part of the
standard package.
Typography
Bold text
Italics
<Key>
<Key1>+<Key2>+<Key3>
Indicates a menu or an item to select.
Used to emphasize a word or a phrase.
Keys enclosed in the less-than and greater-than sign means
that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).
Example: <Ctrl>+<Alt>+<D>
ix
M4A785-M specifications summary
CPU
AMD® Phenom™ II / Athlon™ II / Phenom™ / Athlon™ / Sempron™
family processors (AM3 / AM2+ / AM2)
Supports 45nm CPU
Supports CPU up to 125W
AMD® Cool ‘n’ Quiet™ 2.0 technology (depending on CPU type)
* Refer to www.asus.com for the AMD® CPU support list.
Chipset
AMD® 785G / SB710
Front Side Bus
Up to 5200MT/s HyperTransport™ 3.0 interface for AM2+ /AM3 CPU
2000 / 1600 MT/s for AM2 CPU
Memory
Dual-channel memory architecture
4 x 240-pin DIMM slots support maximum 16GB unbuffered ECC
and non-ECC DDR2 1200(O.C.)/1066/800/667MHz memory
modules
* We recommend that you install the DDR2 1200(O.C.) DIMMs on
the blue slots for better performance.
** DDR2 1200(O.C.)/1066 is supported by AM3/AM2+ CPU only.
*** Due to AM3/AM2+ CPU limitation, only one DDR2
1200(O.C.)/1066 is supported per channel.
****Refer to www.asus.com for the latest Memory QVL
(Qualified Vendors List).
***** When you install a total memory of 4GB or more, Windows®
32-bit operating system may only recognize less than 3GB. We
recommend a maximum of 3GB system memory if you are using
a Windows® 32-bit operating system.
Graphics
Integrated ATI Radeon™ HD 4200 GPU
Maximum shared memory up to 512MB
Supports DVI-D with HDCP compliant with max. resolution up to
2560x1600 (@60Hz Dual-link)
Supports HDMI™ technology with max. resolution up to
1920x1200 (1080P) @60Hz
Supports RGB with max. resolution up to 2048x1536 (@85Hz)
Supports Hybrid CrossFireX™ (for Windows® Vista only)
Supports Microsoft® DirectX 10.1, OpenGL 2.0, Shader Model 4.1,
Hardware Decode Acceleration for H.264, VC-1, and MPEG-2
Dual VGA output supports:
– RGB & DVI
– RGB & HDMI
* Refer to www.amd.com for the discrete GPUs which support Hybrid
CrossFireX™.
Expansion slots
1 x PCIe 2.0 x16 slot
1 x PCIe x1 slot
2 x PCI 2.2 slots
(continued on the next page)
M4A785-M specifications summary
Storage
1 x Ultra DMA 133/100/66 connector for up to 2 PATA devices
6 x Serial ATA 3Gb/s connectors support RAID 0, RAID 1,
RAID 0+1, and JBOD configurations
Audio
VIA® VT1708S 8-channel High Definition Audio CODEC
– Optical S/PDIF out port at back I/O
– Supports Jack-detection, Multi-streaming, and Front Panel
Jack-Retasking
USB
Supports up to 12 USB 2.0/1.1 ports (6 ports at mid-board, 6 ports at
the back panel)
LAN
Realtek® 8112L PCIe Gigabit LAN controller
ASUS unique
features
ASUS 4+1 Phase Power Design
ASUS EPU-4 Engine
ASUS Express Gate
ASUS Turbo Key
ASUS Anti-Surge
ASUS CrashFree BIOS 3
ASUS EZ Flash 2
ASUS Q-Fan
ASUS MyLogo 2
ASUS AI NET 2
ASUS
overclocking
features
Intelligent overclocking tools:
– Turbo Key
– GPU NOS
* GPU NOS is not supported in Hybrid CrossFireX™ mode.
SFS (Stepless Frequency Selection):
– FSB tuning from 200MHz up to 550MHz at 1MHz increment
– PCIe frequency tuning from 100MHz up to 150MHz at 1MHz
increment
Overclocking Protection:
ASUS C.P.R. (CPU Parameter Recall)
Back panel I/O
ports
1 x PS/2 Keyboard/Mouse Combo port
1 x Optical S/PDIF Out port
1 x VGA port
1 x DVI port
1 x HDMI port
1 x LAN (RJ-45) port
6 x USB 2.0/1.1 ports
8-channel audio I/O ports
(continued on the next page)
xi
M4A785-M specifications summary
Internal I/O connectors
3 x USB 2.0/1.1 connectors support additional
6 USB 2.0/1.1 ports
1 x IDE connector
1 x COM connector
1 x LPT connector
6 x SATA connectors
1 x Front panel audio connector
1 x System panel connector
1 x S/PDIF Out connector
1 x CPU fan connector
1 x Chassis fan connector
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
BIOS
8Mb Flash ROM, AMI BIOS, PnP, DMI v2.0, WfM2.0,
SM BIOS v2.5, ACPI v2.0a,
Accessories
1 x Ultra DMA 133/100/66 cable
2 x Serial ATA cables
1 x I/O shield
1 x User Manual
Support DVD
Drivers
ASUS Update
ASUS PC Probe II
Anti-Virus software (OEM version)
Form factor
MicroATX form factor: 9.6 in x 9.6 in (24.4 cm x 24.4 cm)
* Specifications are subject to change without notice.
xii
Chapter 1
Product introduction
1.1
Welcome!
Thank you for buying an ASUS® M4A785-M motherboard!
The motherboard delivers a host of new features and latest technologies, making it another
standout in the long line of ASUS quality motherboards!
Before you start installing the motherboard, and hardware devices on it, check the items in
your package with the list below.
1.2
Package contents
Check your motherboard package for the following items.
Motherboard
Cables
Accessories
Application DVD
Documentations
ASUS M4A785-M motherboard
2 x Serial ATA cables
1 x Ultra DMA 133/100/66 cable
1 x I/O shield
ASUS motherboard Support DVD
User Manual
If any of the above items is damaged or missing, contact your retailer.
1.3
Special features
1.3.1
Product highlights
AMD® Phenom™ II / Athlon™II / Sempron™ 100 Series
processors
This motherboard supports AMD® AM3 multi-core processors with unique
L3 cache and delivers better overclocking capabilities with less power
consumption. It features dual-channel DDR2 1066 memory support and
accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0
based system bus. This motherboard also supports AMD® CPUs in the
new 45nm manufacturing process.
ASUS M4A785-M
1-1
AMD® Phenom™ X4 / Phenom™ X3 / Athlon™ X2 / Athlon™ /
Sempron™ processors (socket AM2+/AM2)
This motherboard supports AMD® Socket AM2+ multi-core processors.
It features dual-channel DDR2 1066 memory support, data transfer rate
up to 5200MT/s via HyperTransport™ 3.0 based system bus, and AMD®
Cool ‘n’ Quiet™ Technology.
AMD® 785G Chipset
The AMD® 785G Chipset is designed to support up to 5200MT/s
HyperTransport™ 3.0 (HT 3.0) interface speed and PCI Express 2.0
x16 graphics. It is optimized with AMD’s latest AM3 multi-core CPUs to
provide excellent system performance and overclocking capabilities.
HyperTransport™ 3.0 support
HyperTransport™ 3.0 technology provides 2.6 times more bandwidth
than HT1.0 that radically improves system efficiency for a smoother and
faster computing environment.
AMD Cool ‘n’ Quiet Technology
This motherboard supports the AMD Cool ‘n’ Quiet technology which
monitors system operation and automatically adjusts CPU voltage and
frequency for a cool and quiet operating environment.
DDR2 1200 (O.C.)
This motherboard supports DDR2 1200 (O.C.) that provides faster
data transfer rate and more bandwidth to increase memory computing
efficiency, enhancing system performance in 3D graphics and other
memory demanding applications.
S/PDIF digital sound ready
This motherboard provides convenient connectivity to external home
theater audio systems via coaxial and optical S/PDIF_OUT (SONYPHILIPS Digital Interface) jacks. The S/PDIF transfers digital audio
without converting it to analog format and keeps the best signal quality.
Hybrid CrossFireX™ support
ATI Hybrid CrossFireX™ technology greatly boosts graphics performance
with an onboard GPU and a discrete GPU.
• Hybrid CrossFireX™ is supported by Windows® Vista OS only.
• Refer to www.amd.com for the discrete GPUs which support Hybrid CrossFireX™.
1-2
Chapter 1: Product introduction
Serial ATA 3Gb/s technology
This motherboard supports hard drives based on the Serial ATA (SATA)
3Gb/s storage specifications, delivering enhanced salability and doubling
the bus bandwidth for high-speed data saving and retrieval.
8-channel high definition audio
The onboard 8-channel HD audio (High Definition Audio, previously
codenamed Azalia) CODEC enables high-quality 192KHz/24-bit audio
output and jack-detect feature that automatically detects and identifies
what types of peripherals are plugged into the audio I/O jacks and notifies
users of inappropriate connection, which means there will be no more
confusion of Line-in, Line-out, and Mic jacks.
Gigabit LAN solution
The onboard LAN controller is a highly integrated Gb LAN controller. It is
enhanced with an ACPI management function to provide efficient power
management for advanced operating systems.
HDMI support
HDMI (High-Definition Multimedia Interface) is a set of digital video
standards that deliver multi-channel digital audio and uncompressed
digital video for full HD 1080p visuals through a single cable. Supporting
HDCP copy protection such as HD DVD and Blu-ray discs, HDMI
provides you with the highest-quality home theater experience.
HDMI/DVI/RGB support
This motherboard supports multiple digital and analog display output
interfaces: HDMI, DVI, and D-Sub. With such diversity of display outputs,
you are able to choose and upgrade display devices freely.
1.3.2
Innovative ASUS features
ASUS Express Gate
ASUS Express Gate is an instant-on environment that gives you quick
access to the Internet. Five seconds after powering on your computer,
you can instantly surf the Internet without entering the Windows® OS.
• ASUS Express Gate supports installation on SATA HDDs, USB HDDs and flash
drives with at least 1.2GB free disk space. When installing it on USB HDDs or
flash drives, connect the drives to the motherboard USB port before turning on the
computer.
• The actual boot time depends on the system configuration.
• ASUS Express Gate supports file uploading from SATA HDDs, ODDs and USB
drives. It supports file downloading to USB drives only.
• ASUS Express Gate complies with the OpenGL standard. Refer to support.asus.com
for Express Gate source codes.
ASUS M4A785-M
1-3
ASUS CrashFree BIOS 3
ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to
restore a corrupted BIOS file using the bundled support DVD or a USB
flash disk that contains the BIOS file.
ASUS EZ Flash 2
ASUS EZ Flash 2 allows you to update the BIOS from a USB flash disk
before entering the OS.
ASUS EPU
ASUS EPU is a unique power saving technology that detects the current
system loadings and adjusts the power consumption in real time.
ASUS Turbo Key
ASUS Turbo Key allows you to turn the PC power button into
an overclocking button. After the easy setup, Turbo Key boosts
performances without interrupting ongoing work or games, simply through
pressing the button.
ASUS Anti-Surge Protection
This special design prevents expensive devices and the motherboard
from damage caused by power surges from switching power supply unit
(PSU).
GPU NOS
GPU NOS technology intelligently detects graphic loading and
automatically boosts performance for the most demanding tasks.
It provides you with a faster reaction time for an excellent graphics
performance.
GPU NOS is not supported in Hybrid CrossFireX™ mode.
ASUS MyLogo 2™
Turn your favorite photos into 256-color boot logos to personalize your
system.
ASUS Q-Fan
ASUS Q-Fan technology intelligently adjusts CPU fan speeds according
to system loading to ensure a quiet, cool, and efficient operation.
ASUS AI NET 2
ASUS AI NET 2 remotely detects the cable connection immediately after
you turn on the system and any faulty cable connections are reported
back up to 100 meters at 1 meter accuracy.
1-4
Chapter 1: Product introduction
C.P.R. (CPU Parameter Recall)
The BIOS C.P.R. feature automatically restores the CPU default settings
when the system hangs due to overclocking failure. C.P.R. eliminates the
need to open the system chassis and clear the RTC data. Simply shut
down and reboot the system, and the BIOS automatically restores the
CPU parameters to their default settings.
Green ASUS
This motherboard and its packaging comply with the European Union’s
Restriction on the use of Hazardous Substances (RoHS). This is in line
with the ASUS vision of creating environment-friendly and recyclable
products/packaging to safeguard consumers’ health while minimizing the
impact on the environment.
1.4
Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• Unplug the power cord from the wall socket before touching any component.
• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due to
static electricity.
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.
• Before you install or remove any component, switch off the ATX power supply and
detach its power cord. Failure to do so may cause severe damage to the motherboard,
peripherals, or components.
Onboard LED
The motherboard comes with a standby power LED that lights up to indicate that the system
is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down
the system and unplug the power cable before removing or plugging in any motherboard
component. The illustration below shows the location of the onboard LED.
ASUS M4A785-M
1-5
1.5
Motherboard overview
1.5.1
Placement direction
1.5.2
Screw holes
When installing the motherboard, ensure that you place it into the chassis in the correct
orientation. The edge with external ports goes to the rear part of the chassis as indicated in
the image below.
Place eight screws into the holes indicated by circles to secure the motherboard to the
chassis.
DO NOT overtighten the screws! Doing so can damage the motherboard.
Place this side towards
the rear of the chassis.
1-6
Chapter 1: Product introduction
1.5.3
Motherboard layout
1.5.4
Layout contents
Connectors/Jumpers/Slots/LED
Page Connectors/Jumpers/Slots/LED
Page
1. CPU and chassis fan connectors
(4-pin CPU_FAN and 3-pin CHA_FAN)
1-29
8. Clear RTC RAM (3-pin CLRTC)
1-19
2. ATX power connectors (24-pin EATXPWR,
4-pin ATX12V)
1-23
9. SATA connectors (7-pin SATA1-6)
1-25
3. CPU Socket AM2+
1-8
10. System panel connector (20-8 pin PANEL)
1-26
4. DDR2 DIMM slots
1-11
11. Onboard power LED (SB_PWR)
5. Serial port connector (10-1 pin COM1)
1-27
12. USB connectors (10-1 pin USB78, USB910,
USB1112)
1-27
6. LPT connector (26-1 pin LPT)
1-29
13. Digital audio connector (4-1 pin SPDIF_OUT)
1-28
7. IDE connector (40-1 pin PRI_IDE)
1-24
14. Front panel audio connector (10-1 pin AAFP)
1-28
ASUS M4A785-M
1-7
1.6
Central Processing Unit (CPU)
The motherboard comes with an AM2+/AM2 socket designed for Phenom™ II /
Athlon™ II / Phenom™ / Athlon™/ Sempron™ family processors (AM3/AM2+/AM2).
The AM2/AM2+ socket has a different pinout from the 940-pin socket designed for the AMD
Opteron™ processor. Use a CPU that is designed for the AM2/AM2+ socket.
1.6.1
Installing the CPU
To install a CPU:
1.
Locate the CPU socket on the motherboard.
2.
Press the lever sideways to unlock the
socket, then lift it up to a 90°-100° angle.
Socket lever
Ensure that the socket lever is lifted up to a 90°-100° angle; otherwise, the CPU will not fit
in completely.
3.
Position the CPU above the socket such that the CPU
corner with the gold triangle matches the socket corner
with a small triangle.
4.
Carefully insert the CPU into the socket until it fits in place.
The CPU fits only in one correct orientation.
DO NOT force the CPU into the socket to
prevent bending the pins and damaging the
CPU!
Small triangle
Gold triangle
1-8
Chapter 1: Product introduction
5.
When the CPU is in place, push down the socket
lever to secure the CPU. The lever clicks on the side
tab to indicate that it is locked.
6.
Install a CPU heatsink and fan following the
instructions that comes with the heatsink package.
You can also refer to section 1.6.2 Installing
heatsink and fan for instructions.
7.
Connect the CPU fan cable to the CPU_FAN connector on the motherboard.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
ASUS M4A785-M
1-9
1.6.2
Installing the heatsink and fan
Ensure that you use only AMD-certified heatsink and fan assembly.
To install the CPU heatsink and fan:
1.
Place the heatsink on top of the installed CPU, ensuring that the heatsink fits properly
on the retention module base.
• The retention module base is already installed on the motherboard upon purchase.
• You do not have to remove the retention module base when installing the CPU or
installing other motherboard components.
• If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal
Interface Material is properly applied to the CPU heatsink or CPU before you install the
heatsink and fan assembly.
CPU Fan
CPU Heatsink
Retention bracket
Retention Module Base
Retention bracket lock
Your boxed CPU heatsink and fan assembly should come with installation instructions for
the CPU, heatsink, and the retention mechanism. If the instructions in this section do not
match the CPU documentation, follow the latter.
2.
Attach one end of the retention bracket to the retention module base.
1
2
3
1-10
4
5
Chapter 1: Product introduction
3.
Align the other end of the retention bracket to the retention module base. A clicking
sound denotes that the retention bracket is in place.
Ensure that the fan and heatsink assembly perfectly fits the retention mechanism module
base, otherwise you cannot snap the retention bracket in place.
4.
Push down the retention bracket lock on the retention mechanism to secure the
heatsink and fan to the module base.
5.
When the fan and heatsink assembly is in place, connect the CPU fan cable to the
connector on the motherboard labeled CPU_FAN.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
1.7
System memory
1.7.1
Overview
The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules
(DIMM) sockets. A DDR2 module has the same physical dimensions as a DDR DIMM but
has a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched
differently to prevent installation on a DDR DIMM socket. The figure illustrates the location of
the DDR2 DIMM sockets:
Channel
ASUS M4A785-M
Sockets
Channel A
DIMM_A1 and DIMM_A2
Channel B
DIMM_B1 and DIMM_B2
1-11
1.7.2
Memory configurations
You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR2 DIMMs
into the DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel configuration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility, we
recommend that you obtain memory modules from the same vendor.
• Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:
-
-
Install a maximum of 3GB system memory if you are using a 32-bit Windows® OS.
Use a 64-bit Windows® OS if you want to install 4GB or more memory on the motherboard.
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
M4A785-M Motherboard Qualified Vendors Lists (QVL)
DDR2-1200(O.C.)MHz capability
Size
Vendor
SS/
DS
Part No.
2048MB(Kit of 2) Kingston
2048MB(Kit of 2) OCZ
KHX96002K2/2G
OCZ2FX12002GK
DS
DS
2048MB(Kit of 2) Team
TXDD1024M1300HC6
DS
Chip Brand
N/A
N/A
Heat-Sink
Package
Chip NO.
CL
DIMM support
Heat-Sink Package
Heat-Sink Package
5-5-5-15
5-5-5-18
A*
•
•
Heat-Sink Package
6-6-6-18
•
B*
•
•
C*
DDR2-1066MHz capability
Size
Vendor
Chip
Brand
Part No.
4096MB(Kit of 2)
2048MB(kit of 2)
4096MB(kit of 2)
1024MB
2048MB(Kit of 2)
2048MB(Kit of 2)
1024MB
2048MB
2048MB(kit of 2)
A-Data
Apacer
Apacer
Corsair
Corsair
Corsair
Crucial
Crucial
G.SKILL
AD21066E002GU
78.0AG9S.9K4
78.AAGAL.9KZ
CM2X1024-8500C5
CM2X1024-8500C5D
CM2X2048-8500C5D
BL12864AA1065.8FE5
CT25664AA1067.16FE1
F2-8500CL5D-2GBPI
DS
DS
DS
DS
DS
DS
SS
DS
SS
1024MB
G.SKILL
F2-8500CL5S-1GBPK
DS N/A
F2-8500CL5D-2GBPK
F2-8500CL5D-4GBPI-B
F2-8500CL5D-4GBPI
DS N/A
DS N/A
DS N/A
2048MB(Kit of 2) G.SKILL
4096MB(Kit of 2) G.SKILL
4096MB(Kit of 2) G.SKILL
N/A
N/A
N/A
Corsair
N/A
N/A
N/A
Micron
N/A
Chip NO.
CL
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
9DJKH D9JKH
Heat-Sink Package
Heat-Sink
PackageSN:815130037562
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
5-5-5-15
5-5-5-15
5-5-5-15
N/A
5-5-5-15
5-5-5-15
N/A
7-7-7-13
5-5-5-15
DIMM support
A*
•
•
•
•
•
•
•
B*
•
•
•
•
•
•
•
•
•
•
5-5-5-15
•
•
•
5-5-5-15
5-5-5-15
5-5-5-15
•
•
•
•
•
•
•
(continued on the next page)
1-12
C*
•
•
•
Chapter 1: Product introduction
DDR2-1066MHz capability
Size
Vendor
4096MB(kit of 2)
1024MB
1024MB
2048MB
2048MB
4096MB(kit of 2)
1024MB
2048MB
1024MB(Kit of 2)
1024MB(Kit of 2)
1024MB
1024MB
2048MB(Kit of 2)
2048MB(Kit of 2)
2048MB(Kit of 2)
G.SKILL
GEIL
GEIL
GEIL
GEIL
GEIL
kingmax
kingmax
Kingston
Kingston
Kingston
Kingston
Kingston
Kingston
OCZ
Part No.
F2-8500CL5D-4GBPK
GE22GB1066C5DC
GE24GB1066C5QC
GB24GB8500C5DC
GE24GB1066C5DC
GX24GB8500C5UDC
KLED48F-B8KU6-NGES
KLEE88F-B8KU6-NNAS
KHX8500D2K2/1G
KHX8500D2K2/1GN(EPP)
KHX8500D2K2/2GN(EPP)
KVR1066D2N7/1G
KHX8500D2K2/2G
KHX8500D2K2/4G
OCZ2N10662GK(Epp)
DS
SS
SS
DS
DS
DS
SS
DS
SS
SS
DS
DS
DS
DS
DS
2048MB(Kit of 2) OCZ
OCZ2N1066SR2DK(Epp) DS
4096MB(kit of 2) OCZ
4096MB(kit of 2) OCZ
4096MB(kit of 2) OCZ
OCZ2F10664GK
OCZ2P10664GK(EPP)
OCZ2RPR10664GK
DS
DS
DS
2048MB
PSC
AL8E8G73F-AE1
DS
1024MB
Qimonda
HYS64T128000EU-1.9-C2 DS
2048MB(Kit of 2) Transcend TX1066QLU-2GK
4096MB(kit of 2) Transcend TX1066QLU-4GK
SS
DS
Chip
Brand
Chip NO.
N/A
GEIL
GEIL
GEIL
GEIL
N/A
kingmax
kingmax
N/A
Kingston
Kingston
Elpida
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
GL2L128M88BA25AB
Heat-Sink Package
Heat-Sink Package
KKB8FNUXF-DXX-18A
KKB8FNUXF-DXX-18A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
E5108AJBG-1J-E
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
OCZ
004820806001601-2
N/A
Heat-Sink Package
N/A
Heat-Sink Package
N/A
Heat-Sink Package
A3R1GE3FGF907MAT0FT
PSC
AIWAN-G8E
HYB18T1G800C2FQimonda
1.9FSS25253
N/A
Heat-Sink Package
Transcend Heat-Sink Package
DIMM support
CL
5-5-5-15
5
5
5
5
5
6-6-6-24
6-6-6-24
5-5-5-15
5-5-5-18
5-5-5-18
7
5-5-5-15
5-5-5-15
5-5-5-15
A*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
B*
•
•
•
C*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
5-5-5-15
6-7-7-20
5-5-5-18
5-5-5-15
•
•
•
•
•
•
•
•
5-5-5-12
•
N/A
•
5
5
•
•
•
•
•
•
DDR2-800MHz capability
Size
Vendor
512MB
A-Data
2048MB(Kit of 2) A-Data
1024MB
A-Data
2048MB
A-Data
4096MB(Kit of 2) A-Data
512MB
Apacer
1024MB
Corsair
1024MB
Corsair
1024MB
Corsair
4096MB(Kit of 2) Corsair
4096MB(Kit of 2) Corsair
2048MB(kit of 2) Crucial
4096MB(kit of 2) Crucial
4096MB(kit of 2) Crucial
SS/ Chip
DS Brand
Part No.
M2GVD6G3H3160Q1E52
SS
AD2800E001GOU
SS
M2GVD6G314170Q1E58
DS
AD2800002GMU
DS
AD2800E002GOU
DS
78.91G91.9K5
SS
CM2X1024-6400
DS
XMS2-6400
DS
XMS2-6400
DS
CM2X2048-6400C5DHX
DS
CM2X2048-6400C5
DS
BL12864AL80A.8FE5(EPP) SS
BL25664AL80A.16FE5(EPP) DS
BL25664AR80A.16FE5(EPP) DS
VDATA
N/A
VDATA
Hynix
N/A
Apacer
Corsair
Corsair
Corsair
N/A
N/A
N/A
N/A
N/A
512MB
G.SKILL F2-6400CL5D-1GBNQ
SS
G.SKILL
1024MB
1024MB
2048MB
2048MB
4096MB
1024MB
1024MB
1024MB
1024MB
1024MB
1024MB
G.SKILL
G.SKILL
G.SKILL
G.SKILL
G.SKILL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
DS
G.SKILL
G.SKILL
G.SKILL
G.SKILL
N/A
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
F2-6400CL4D-2GBPK
F2-6400CL5D-2GBNQ
F2-6400CL4D-4GBPK
F2-6400CL5D-4GBPQ
F2-6400CL6Q-16GMQ
GB22GB6400C4DC
GB22GB6400C5DC
GB24GB6400C4QC
GB24GB6400C5QC
GE22GB800C4DC
GE22GB800C5DC
Chip NO.
VD29608A8A-25EG20813
Heat-Sink Package
VD29608A8A-25EG80813
Heat-Sink Package
Heat-Sink Package
AM4B5708JQJS8E0751C
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
SN:8151030036642
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
GL2L64M088BA30EB
GL2L64M088BA30EB
GL2L64M088BA30EB
GL2L64M088BA30EB
Heat-Sink Package
Heat-Sink Package
CL
DIMM support
N/A
4-4-4-12
N/A
N/A
4-4-4-12
5
N/A
4
5
5
5
4-4-4-12
4-4-4-12
4-4-4-12
A*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
B*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
C*
•
•
5-5-5-15
•
•
•
4
5
4
5
5
5
5
4
5
4
5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
(continued on the next page)
ASUS M4A785-M
1-13
DDR2-800MHz capability
Size
Vendor
Part No.
SS/ Chip
DS Brand
1024MB
GEIL
GE24GB800C4QC
DS
1024MB
GEIL
GE24GB800C5QC
DS
1024MB
GEIL
GX22GB6400DC
DS
1024MB
GEIL
GX22GB6400UDC
DS
2048MB
GEIL
GB24GB6400C4DC
DS
2048MB
GEIL
GB24GB6400C5DC
DS
2048MB
GEIL
GB28GB6400C4QC
DS
2048MB
GEIL
GB28GB6400C5QC
DS
2048MB
GEIL
GE24GB800C4DC
DS
2048MB
GEIL
GE24GB800C5DC
DS
2048MB
GEIL
GE28GB800C4QC
DS
2048MB
GEIL
GE28GB800C5QC
DS
2048MB
GEIL
GX22GB6400CUSC
DS
2048MB
GEIL
GX22GB6400LX
DS
2048MB
GEIL
GX24GB6400DC
DS
512MB
Kingmax KLDC28F-A8KI5
SS
1024MB
Kingmax KKB8FFBXF-CFA-25U
SS
2048MB
kingmax KLDE88F-B8KB5
DS
512MB
Kingston KVR800D2N6/ 512
SS
1024M(Kit of 2) Kingston KHX6400D2LLK2/1GN
SS
1024MB
Kingston KVR800D2N5/1G(low profile) SS
1024MB
Kingston KHX6400D2LL/1G
DS
1024MB
Kingston KVR800D2N6/1G(low profile) DS
2048MB(Kit of 2) Kingston KHX6400D2K2/2G
DS
2048MB
Kingston KHX6400D2/2G
DS
2048MB
Kingston KVR800D2N5/2G(low profile) DS
2048MB
Kingston KVR800D2N6/2G(low profile) DS
2048MB
Kingston KVR800D2N6/2G
DS
4096MB
Kingston KVR800D2N6/4G
DS
512MB
Micron
MT9HTF6472AY-80ED4
SS
1024MB
Micron
MT9HTF12872AY-800E1
SS
1024MB
Micron
MT18HTF12872AY-80ED4 DS
2048MB
Micron
MT16HTF25664AY-800G1 DS
1024MB
OCZ
OCZ2G800R22GK
DS
1024MB
OCZ
OCZ2P800R22GK
DS
1024MB
OCZ
OCZ2RPR8002GK
DS
1024MB
OCZ
OCZ2VU8004GK
DS
2048MB(Kit of 2) OCZ
OCZ2SE8002GK
DS
2048MB
OCZ
OCZ2F8004GK(EPP)
DS
4096MB(Kit of 2) OCZ
OCZ2P8004GK
DS
1024MB
PSC
AL7E8F73C-8E1
SS
1024MB
PSC
AL7E8G73F-8E1
SS
2048MB
PSC
AL7E8E63H-10E1K
DS
2048MB
PSC
AL8E8F73C-8E1
DS
2048MB
PSC
AL8E8G73F-8E1
DS
2048MB
PSC
PL8E8F73C-8E1
DS
2048MB
PSC
PL8E8G73E-8E1
DS
2048MB
Qimonda HYS64T256020EU-2.5-C2 DS
512MB
Samsung K4T51083QG-HCF7
SS
1024MB
Samsung K4T1G084QQ-HCF7
SS
1024MB
Samsung M378T2863EHS-CF7
SS
1024MB
Samsung M391T2863QZ3-CF7
SS
1024MB
Samsung K4T51083QG-HCF7
DS
1024MB
Samsung M378T2953GZ3-CF7
DS
2048MB
Samsung K4T1G084QQ-HCF7
DS
2048MB
Samsung M391T5663QZ3-CF7
DS
4096MB
Samsung M378T5263AZ3-CF7
DS
Super
1024MB
T800UB1GC4
DS
Talent
512MB
TranscendTS64MLQ64V8J
SS
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
GEIL
Kingmax
Kingmax
kingmax
Kingston
Kingston
Kingston
Kingston
Elpida
N/A
Kingston
Kingston
Elpida
Qimonda
Elpida
Micron
Micron
Micron
Micron
OCZ
OCZ
OCZ
OCZ
N/A
N/A
N/A
PSC
PSC
PSC
PSC
PSC
PSC
PSC
Qimonda
Qimonda
Qimonda
Samsung
Samsung
Samsung
Samsung
Samsung
Samsung
Samsung
Super
Talent
Micron
Chip NO.
CL
DIMM support
4
5
5
4
4
5
4
5
4
5
4
5
4
5
5
N/A
N/A
N/A
6
4-4-4-12
5
4-4-4-12
6
5-5-5-15
5
5
6
6
6
N/A
N/A
N/A
6-6-6-12
4-5-5-15
4-4-4-15
4-4-4-15
5-6-6-18
5-5-5-15
5-4-4-18
5-4-4-15
5
N/A
N/A
5
N/A
5
5
5
6
6
N/A
N/A
6
N/A
6
N/A
N/A
A*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
B*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Heat-Sink Package
4
•
•
7HD22 D9GMH
5
•
•
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
GL2L128M88BA25AB
GL2L128M88BA25AB
GL2L128M88BA25AB
GL2L128M88BA25AB
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
KKA8FF1XF-JFS-25A
KLDD48F-B8KB5
KKB8FFBXF-CFA-25U
KVR800D2N6/ 512
Heat-Sink Package
D1288TEFCGL25U
Heat-Sink Package
E510BAJBG-8E-E
Heat-Sink Package
Heat-Sink Package
D1288TPFCGL25U
E8105ACBG-8E-E
HYB18T1G800C2F-2.5
E2108ABSE-8G-E
6ED22D9GKX(ECC)
D9HNP 7YE22(ECC)
6TD22D9GKX(ECC)
8AG27 D9JWB
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
A3R1GE3CFF734MAA0E
P3R1GE3FGF850MAC19
A3R1GE3CFF750RABBP(ECC)
A3R1GE3CFF734MAA0E
P3R1GE3FGF850MAC19
SHG772-AA3G
XCP271A3G-A
HY818T1G800C2F-2.5
M378T6553GZS-CF7
M378T2863QZS-CF7
K4T1G084QE
K4T1G084QQ-HCF7(ECC)
M378T2953GZ3-CF7
K4T51083QG
M37875663QZ3-CF7
K4T1G084QQ-HCF7(ECC)
K4T2G084QA-HCF7
(continued on the next page)
1-14
Chapter 1: Product introduction
C*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
DDR2-800MHz capability
Size
1024MB
1024MB
1024MB
1024MB
1024MB
2048MB
2048MB
2048MB
1024MB
2048MB
1024MB
2048MB
1024MB
1024MB
1024MB
2048MB
Vendor
Part No.
SS/ Chip
DS Brand
Chip NO.
CL
A*
•
•
•
•
•
•
•
•
•
•
•
•
•
B*
•
•
•
•
•
•
•
•
•
•
•
•
•
C*
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
TranscendJM800QLU-1G
TranscendTS128MLQ64V8U
TranscendJM800QLJ-1G
TranscendJM800QLJ-1G
TranscendTS128MLQ64V8J
TranscendJM800QLU-2G
TranscendTS256MLQ64V8U
TranscendTS256MLQ72V8U
AENEON AET760UD00-25DC08X
AENEON AET860UD00-25DC08X
ASINT
SLY2128M8-JGE
ASINT
SLZ2128M8-JGE
Century 28V0H8
M2Y1G64TU88D5B-AC
Elixir
0828.GS
SS
SS
DS
DS
DS
DS
DS
DS
SS
DS
SS
DS
DS
Transced
ELPIDA
Transced
Transcend
Mircon
Transced
Elpida
Elpida
AENEON
AENEON
ASINT
ASINT
Hynix
TQ1243PCF8
E1108ACBG-8E-E
TQ123PJF8F0801
TQ123YBF8 T0747
7HD22D9GMH
TQ243PCF8
E1108ACBG-8E-E
E1108ACBG-8E-E(ECC)
AET03R250C 0732
AET03R25DC 0732
DDRII1208-GE 8115
DDRII1208-GE 8115
HY5PS12821CFP-S5
SS
Elixir
N2TU16800E-AC
ELIXIR
DS
ELIXIR
N2TU 51280BE25C802006Z1DV
5
DS
Elixir
N2TUG80DE-AC
N/A
•
DS
DS
DS
DS
SS
DS
SS
SS
DS
DS
DS
DS
DS
DS
DS
Hynix
Hynix
N/A
N/A
MDT
MDT
takeMS
TAKEMS
TAKEMS
takeMS
TAKEMS
UMAX
UMAX
Samsung
Hynix
HY5PS12821C FP-S5
HY5PS1G831C FP-S6
Heat-Sink Package
Heat-Sink Package
18D 51280D-2.50726F
18D 51280D-2.50726E
MS18T 51280-2.5P0710
WS18T1G80-205 E0905
Heat-Sink Package
MS18T 51280-2.5P0716
MS18T1G80-205 E0907
U2S12D30TP-8E
U2S24D30TP-8E
K4T51083QE
H5PS1G83EFRS6C 852AK
N/A
N/A
N/A
5-5-5-15
5
5
5
5
4-4-4-12
5
5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Elixir
1024MB
Kingtiger
2048MB
Kingtiger
2048MB
Kingtiger
4096MB(Kit of 2) Kingtiger
512MB
MDT
1024MB
MDT
512MB
TAKEMS
1024MB
TAKEMS
1024MB
TAKEMS
1024MB
TAKEMS
2048MB
TAKEMS
1024MB
UMAX
2048MB
UMAX
1024MB
VDATA
2048MB
VDATA
M2Y1G64TU8HB0B-25C
M2Y2G64TU8HD5B-AC
0826.SG
1GB DIMM PC2-6400
2GB DIMM PC2-6400
KTG2G800PG2
KTG2RX16P ST-01
MDT 512MB
MDT 1024MB
TMS51B264C081-805EP
TMS1GB264D082-805EE
TMS1GB264C081-804EE
TMS1GB264C081-805EP
TMS2GB264D081-805KE
D48001GP3-63BJU
D48002GP0-73BCU
M2XSSKG3147C1L1C5Z
M2XHYKH3J47CC01E5Z
5
5
5
5
5
5
5
N/A
5
5
DIMM support
5
5
N/A
N/A
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
DDR2-667MHz capability
Size
2048MB
512MB
512MB
512MB
1024MB
1024MB
1024MB
2048MB
512MB
1024MB
1024MB
2048MB(Kit of 2)
Vendor
A-Data
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Corsair
Corsair
Corsair
G.SKILL
SS/ Chip
DS Brand
Part No.
M2OAD5H3J4170I1C53
78.91G92.9K5
AU 512E667C5KBGC
AU 512E667C5KBGC
78.01G9O.9K5
AU01GE667C5KBGC
AU01GE667C5KBGC
AM4B5808CQJS7E0749B
VS 512MB667D2
VS1GB667D2
XMS2-5400
F2-5400PHU2-2GBNT
DS
SS
SS
SS
SS
DS
DS
DS
DS
DS
DS
DS
4096MB(Kit of 2) G.SKILL
F2-5300CL5D-4GBMQ
DS
1024MB
2048MB
2048MB
512MB
GX21GB5300SX
GX22GB5300LX
GX24GB5300LDC
KLCC28F-A8KB5
DS
DS
DS
SS
GEIL
GEIL
GEIL
Kingmax
Chip NO.
ADATA
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Apacer
Corsair
Corsair
Corsair
G.SKILL
AD20908A8A-3EG 30724
AM4B5708JQJS7E0751C
AM4B5708GQJS7E06332F
AM4B5708MIJS7E0627B
AM4B5808CQJS7E0751C
AM4B5708GQJS7E0636B
AM4B5708MIJS7E0627B
78.A1G9O.9K4
MIII0052532M8CEC
MID095D62864M8CEC
Heat-Sink Package
D2 64M8CCF 0815 C7173S
Heat-Sink Package
G.SKILL
SN:8151030036559
GEIL
Heat-Sink Package
GEIL
Heat-Sink Package
GEIL
Heat-Sink Package
Kingmax KKEA88B4LAUG-29DX
CL
DIMM support
N/A
5
5
5
5
N/A
5
5
N/A
N/A
4
5-5-5-15
A*
•
•
•
•
•
•
•
•
•
•
•
•
B*
•
•
•
•
•
•
•
•
•
•
•
•
C*
•
•
5-5-5-15
•
•
•
3
5
5
N/A
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
(continued on the next page)
ASUS M4A785-M
1-15
DDR2-667MHz capability
Size
1024MB
512MB
1024MB
1024MB
2048MB
2048MB
1024MB
512MB
1024MB
1024MB
2048MB
4096MB
1024MB
1024MB
1024MB
2048MB
512MB
2048MB
512MB
1024MB
512MB
512MB
1024MB
1024MB
1024MB
1024MB
512MB
1024MB
1024MB
512MB
1024MB
512MB
512MB
1024MB
1024MB
1024MB
1024MB
1024MB
2048MB
Vendor
Kingmax
Part No.
KLCD48F-A8KB5
KVR667D2N5/ 512(low
Kingston
profile)
Kingston KVR667D2E5/1G
KVR667D2N5/1G(low
Kingston
profile)
Kingston KVR667D2E5/2G
KVR667D2N5/2G(low
Kingston
profile)
Micron
MT8HTF12864AY-667E1
PSC
AL6E8E63J-6E1
PSC
AL7E8F73C-6E1
PSC
AL6E8E63J-6E1
PSC
AL8E8F73C-6E1
Samsung M378T5263AZ3-CE6
Super
T667UB1GV
Talent
Transcend JM667QLU-1G
Transcend JM667QLJ-1G
Transcend JM667QLU-2G
Twinmos 8D-A3JK5MPETP
AENEON AET860UD00-30DB08X
Asint
SLX264M8-J6E
ASINT
SLY2128M8-J6E
Century CENTURY 512MB
Century CENTURY 512MB
Century CENTURY 1G
Century CENTURY 1G
ELIXIR
M2Y1G64TU8HA2B-3C
Elixir
M2Y1G64TU8HBOB-3C
KINGBOX 512MB 667MHz
KINGBOX DDRII 1G 667MHz
Leadmax LRMP 512U64A8-Y5
MDT
DDRII 512 PC667
MDT
MDT 1024MB
TAKEMS TMS51B264C081-665AP
TAKEMS TMS51B264C081-665QI
TAKEMS TMS1GB264C081-665AE
TAKEMS TMS1GB264C081-665AP
TAKEMS TMS1GB264C081-665QI
TEAM
TVDD1.02M667C4
UMAX
D46701GP3-63BJU
UMAX
D46702GP0-73BCU
SS/ Chip
DS Brand
DIMM support
Chip NO.
CL
DS
Kingmax KKEA88B4LAUG-29DX
N/A
A*
•
B*
•
C*
•
SS
Kingston D6408TR7CGL25U
5
•
•
•
DS
Elpida
E5108AJBG-8E-E(ECC)
5
•
•
•
DS
PSC
E5108AJBG-8E-E
5
•
•
•
DS
Elpida
NT5TU128M8DE-3C(ECC)
5
•
•
•
DS
Elpida
E1108ACBG-8E-E
5
•
•
SS
SS
SS
DS
DS
DS
Micron
D9HNL 7ZE17
PSC
A3R12E3JFF717B9A00
PSC
A3R1GE3CFF734MAA0J
PSC
A3R12E3JFF717B9A01
PSC
A3R1GE3CFF733MAA00
Samsung K4T2G084QA-HCE6
Super
PG 64M8-800 0750
Talent
Transced TQ243PCF8T0838
Elpida
E5108AJBG-6E-E
Transced TQ243PCF8T0834
PSC
A3R12E3GEF633ACAOY
AENEON AET03F30DB 0730
Asint
DDRII6408-6E
ASINT
DDRII1208-6E 8115
Hynix
HY5PS12821AFP-Y5
Nanya
NT5TU64M8AE-3C
Hynix
HY5PS12821AFP-Y5
Nanya
NT5TU64M8AE-3C
elixir
M2TU 51280AE-3C717095R28F
Elixir
N2TU 51280BE-3C639009W1CF
KINGBOX EPD264082200-4
KINGBOX EPD264082200-4
Hynix
HY5PS12821CFP-Y5 C 702AA
MDT
18D 51201D-30726E
MDT
18D 51280D-30646E
takeMS MS18T 51280-3S0627D
takeMS MS18T 51280-3
takeMS MS18T 51280-3SEA07100
takeMS MS18T 51280-3SP0717A
takeMS MS18T 51280-3
TEAM
T2D648PT-6
UMAX
U2S12D30YP-6E
UMAX
U2S24D30TP-6E
5
5
5
5
5
N/A
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
5
•
•
•
5
5
5
5
5
N/A
N/A
N/A
N/A
N/A
N/A
5
5
N/A
N/A
5
4
4
5
5
5
5
5
N/A
N/A
5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
DS
SS
DS
DS
SS
DS
SS
SS
SS
SS
DS
DS
DS
DS
SS
DS
DS
DS
DS
SS
SS
DS
DS
DS
DS
DS
DS
SS: Single-sided / DS: Double-sided
DIMM support:
• A*: Supports one module inserted into any slot as single-channel memory configuration.
• B*: Supports one pair of modules inserted into either the blue slots or the black slots as one pair of dual-channel memory configuration.
• C*: Supports two pairs of modules inserted into both the blue slots and the black slots as two pairs of dual-channel memory configuration.
Visit the ASUS website at www.asus.com for the latest QVL.
1-16
Chapter 1: Product introduction
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1.7.3
Installing a DIMM
Unplug the power supply before adding or removing DIMMs or other system components.
Failure to do so can cause severe damage to both the motherboard and the components.
2
1.
Press the retaining clips outward to
unlock a DIMM socket.
2.
Align a DIMM on the socket such that
the notch on the DIMM matches the
break on the socket.
DIMM notch
1
1
Unlocked retaining clip
A DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into
a socket to avoid damaging the DIMM.
3.
Firmly insert the DIMM into the socket
until the retaining clips snap back in place
and the DIMM is properly seated.
3
Locked Retaining Clip
1.7.4
Removing a DIMM
To remove a DIMM:
1.
Simultaneously press the retaining clips
outward to unlock the DIMM.
2
Support the DIMM lightly with your
fingers when pressing the retaining
clips. The DIMM might get damaged
when it flips out with extra force.
1
1
2.
Remove the DIMM from the socket.
ASUS M4A785-M
DIMM notch
1-17
1.8
Expansion slots
In the future, you may need to install expansion cards. The following sub‑sections describe
the slots and the expansion cards that they support.
Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.
1.8.1
Installing an expansion card
To install an expansion card:
1.
Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.
2.
Remove the system unit cover (if your motherboard is already installed in a chassis).
3.
Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.
4.
Align the card connector with the slot and press firmly until the card is completely
seated on the slot.
5.
Secure the card to the chassis with the screw you removed earlier.
6.
Replace the system cover.
1.8.2
Configuring an expansion card
After installing the expansion card, configure it by adjusting the software settings.
1.
Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.
2.
Assign an IRQ to the card.
3.
Install the software drivers for the expansion card.
When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that
the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI
groups, making the system unstable and the card inoperable.
1.8.3
PCI slots
1.8.4
PCI Express x1 slot
1.8.5
PCI Express x16 slot
The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that
comply with PCI specifications.
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that
comply with the PCI Express specifications.
This motherboard supports a PCI Express x16 graphics card that complies with the PCI
Express specifications.
1-18
Chapter 1: Product introduction
1.9
1.
Jumpers
Clear RTC RAM (CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5~10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the <Del> key during the boot process and enter BIOS setup to reenter
data.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
• If the steps above do not help, remove the onboard battery and move the jumper again
to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
• You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut
down and reboot the system so the BIOS can automatically reset parameter settings to
default values.
ASUS M4A785-M
1-19
1.10
Connectors
1.10.1
Rear panel ports
1.
PS/2 Keyboard/Mouse Combo port (purple). This port is for a PS/2 keyboard or
mouse.
2.
Optical S/PDIF_OUT port. This port connects to an external audio output device via
an optical S/PDIF cable.
3.
VGA port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.
4.
LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub.
LAN port LED indications
Activity/Link LED
Status
Description
ORANGE
Linked
OFF
BLINKING
No link
Data activity
Speed LED
ACT/LINK SPEED
LED
LED
Status
Description
ORANGE
100Mbps connection
OFF
GREEN
10Mbps connection
1Gbps connection
LAN port
5.
Center/Subwoofer port (orange). This port connects to the center/subwoofer
speakers.
6.
Rear Speaker Out port (black). This port connects to the rear speakers in the
4, 6, and 8-channel audio configurations.
7.
Line In port (light blue). This port connects to the tape, CD, DVD player, or other
audio sources.
8.
Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6 and
8-channel configurations, the function of this port becomes Front Speaker Out.
9.
Microphone port (pink). This port connects to a microphone.
10. Side Speaker Out port (gray). This port connects to the side speakers in the
8-channel audio configuration.
1-20
Chapter 1: Product introduction
Refer to the audio configuration table below for the function of the audio ports in the 2, 4, 6,
or 8-channel configuration.
Audio 2, 4, 6, or 8-channel configuration
Port
Headset
2-channel
4-channel
6-channel
8-channel
Light Blue
Line In
Line In
Line In
Line In
Lime
Line Out
Front Speaker Out
Front Speaker Out
Front Speaker Out
Pink
Mic In
Mic In
Mic In
Mic In
Orange
–
–
Center/Subwoofer
Center/Subwoofer
Black
–
Rear Speaker Out
Rear Speaker Out
Rear Speaker Out
Gray
–
–
–
Side Speaker Out
Ensure the audio device of sound playback is VIA High Definition Audio (the name may
be different based on the OS). Go to Start > Control Panel > Sounds and Audio Devices
> Sound Playback to configure the settings.
11.
USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
12. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB
2.0 devices.
13. DVI-D port. This port is for any DVI-D compatible device and is HDCP compliant
allowing playback of HD DVD, Blu-ray, and other protected content.
14. HDMI port. This port is for a High-Definition Multimedia Interface (HDMI) connector,
and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected
content.
Dual display output support
• This table indicates that whether the following dual display outputs are supported on
your motherboard:
Dual display outputs
Supported
DVI + D-Sub
•
DVI + HDMI
HDMI + D-Sub
Not supported
•
•
• During POST, only the monitor connected to the D-Sub port has display. The dual
display function works only under Windows.
ASUS M4A785-M
1-21
Playback of HD DVD and Blu-ray discs
• For better playback quality, we recommend that you follow the system requirements
listed below.
Suggested list
CPU
AMD® Athlon 4400+
DIMM
DDR2 800 (1GB or higher)
BIOS setup
Frame Buffer Size – 256MB or higher
File format
Best resolution
Windows® XP
Windows® Vista
Non-protected clips
1920 x 1080p
1920 x 1080p
HD-DVD
1920 x 1080p
1280 x 1080p
Blu-ray
1280 x 1080p
1280 x 1080p
• To play HD DVD or Blu-ray discs, ensure to use HDCP compliant devices and software.
15. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
1-22
Chapter 1: Product introduction
1.10.2
1.
Internal connectors
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for an ATX power supply. The plugs from the power supply are
designed to fit these connectors in only one orientation. Find the proper orientation and
push down firmly until the connectors completely fit.
• We recommend that you use an ATX 12V Specification 2.0‑compliant power supply unit
(PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power
plugs.
• If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin
power plug can provide at least 15 A on +12 V and that the PSU has a minimum power
rating of 300W. The system may become unstable or may not boot up if the power is
inadequate.
• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will
not boot up.
• We recommend that you use a PSU with higher power output when configuring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
• If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
ASUS M4A785-M
1-23
2.
IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for Ultra DMA 133/100/66 signal cable. There are three
connectors on each Ultra DMA 133/100/66 signal cable: blue, black, and gray. Connect
the blue connector to the motherboard’s IDE connector, then select one of the following
modes to configure your devices:
Single device
Drive jumper setting
Mode of device(s)
Cable connector
Cable-Select or Master
-
Black
Master
Black
Cable-Select
Two devices
Slave
Master
Master
Slave
Slave
Gray
Black or gray
• Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA
cable connector. This prevents incorrect insertion when you connect the IDE cable.
• Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.
If any device jumper is set as “Cable-Select”, ensure that all other device jumpers have the
same setting.
1-24
Chapter 1: Product introduction
3.
Serial ATA connectors (7-pin SATA1-6)
These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk
and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA
1.5Gb/s specification. The data transfer rate of the Serial ATA 3Gb/s is faster than the
standard parallel ATA with 133 MB/s (Ultra DMA133). If you install Serial ATA hard
disk drives, you can create RAID 0, RAID 1, and RAID 0+1 configurations through the
onboard SB710 chipset.
• Install the Windows® XP Service Pack 1 or later versions before using Serial ATA.
• If you intend to create a Serial ATA RAID set using these connectors, set the type of
the SATA connectors in the BIOS to [RAID]. See section 2.3.4 SATA Configuration for
details.
• The motherboard does not provide a floppy disk drive connector. You could use a USB
floppy disk drive when installing Windows® XP operating system on a hard disk drive
that includes a RAID/AHCI set.
• Due to Windows® XP limitation, Windows® XP may not recognize the USB floppy disk
drive.
• For more details on RAID/AHCI, refer to the RAID/AHCI Supplementary Guide included
in the folder named Manual in the support DVD.
ASUS M4A785-M
1-25
4.
1-26
System panel connector (20-8 pin PANEL)
This connector supports several chassis-mounted functions.
•
System power LED (2-pin PLED)
•
Hard disk drive activity LED (2-pin IDE_LED)
•
System warning speaker (4-pin SPEAKER)
•
ATX power button/soft-off button (2-pin PWRSW)
•
Reset button (2-pin RESET)
This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or flashes when data is read from or written to
the HDD.
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
This connector is for the system power button. Pressing the power button turns
the system on or puts the system in sleep or soft-off mode depending on the BIOS
settings. Pressing the power switch for more than four seconds while the system is ON
turns the system OFF.
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
Chapter 1: Product introduction
5.
USB connectors (10-1 pin USB78, USB910, USB1112)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
480Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
6.
Serial port connector (10-1 pin COM1)
The connector is for a serial (COM) port. Connect the serial port module cable to the
connector, then install the module to a slot opening at the back of the system chassis.
The serial port module is purchased separately.
ASUS M4A785-M
1-27
7.
Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.
Ensure that the audio device of Sound playback is VIA High Definition Audio (the name
may be different based on the OS). Go to Start > Control Panel > Sounds and Audio
Devices > Sound Playback to configure the setting.
The S/PDIF module is purchased separately.
8.
Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either High Definition Audio or AC`97 audio standard. Connect one end of the front
panel audio I/O module cable to this connector.
• We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard high-definition audio capability.
• If you want to connect a high definition front panel audio module to this connector, set
the Front Panel Select item in the BIOS to [HD Audio]. See section 2.4.4 Onboard
Device Configuration for details.
• The front panel audio I/O module is purchased separately.
1-28
Chapter 1: Product introduction
9.
CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of
1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the
motherboard, ensuring that the black wire of each cable matches the ground pin of the
connector.
DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
Only the 4-pin CPU fan supports the ASUS Q-Fan feature.
10. LPT connector (26-1 pin LPT)
The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT is
standardized as IEEE 1284, which is the parallel port interface on IBM PC-compatible
computers.
ASUS M4A785-M
1-29
1.11
Software support
1.11.1
Installing an operating system
This motherboard supports Windows® XP/Vista Operating Systems (OS). Always install the
latest OS version and corresponding updates to maximize the features of your hardware.
• Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.
• Ensure that you install Windows® XP Service Pack 3 or later versions / Windows® Vista
Service Pack 1 or later versions before installing the drivers for better compatibility and
system stability.
1.11.2
Support DVD information
The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.
The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.
To run the Support DVD
Place the Support DVD into the optical drive. The DVD automatically displays the Drivers
menu if Autorun is enabled on your computer.
The following screen is for reference only.
Click an icon to
display Support DVD/
motherboard information
Click an item to install
If Autorun is NOT enabled on your computer, browse the contents of the Support DVD to
locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run
the DVD.
1-30
Chapter 1: Product introduction
Chapter 2
BIOS information
2.1
Managing and updating your BIOS
Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to
restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
utility.
2.1.1
ASUS Update utility
The ASUS Update is a utility that allows you to manage, save, and update the motherboard
BIOS in Windows® environment.
• ASUS Update requires an Internet connection either through a network or an Internet Service Provider (ISP).
• This utility is available in the support DVD that comes with the motherboard package.
Installing ASUS Update
To install ASUS Update:
1.
Place the support DVD into the optical drive. The Drivers menu appears.
2.
Click the Utilities tab, then click ASUS Update.
3.
Follow the onscreen instructions to complete the installation.
Quit all Windows® applications before you update the BIOS using this utility.
Updating the BIOS
To update the BIOS:
1.
From the Windows® desktop, click Start > Programs > ASUS > ASUS Update >
ASUS Update to launch the ASUS Update utility.
2.
From the dropdown list, select either of the following methods:
Updating from the Internet
a.
Select Update BIOS from the Internet, then click Next.
b.
Select the ASUS FTP site nearest you to avoid network traffic, or click Auto Select then click Next.
c.
From the FTP site, select the BIOS version that you want to download then click Next.
ASUS M4A785-M
2-1
The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.
Updating from a BIOS file
a.
Select Update BIOS from a file, then click Next.
b.
Locate the BIOS file from the Open window, then click Open.
3.
Follow the onscreen instructions to complete the updating process.
2.1.2
ASUS EZ Flash 2
The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS‑based
utility.
Before you start using this utility, download the latest BIOS file from the ASUS website at
www.asus.com.
To update the BIOS using EZ Flash 2:
1.
Insert the USB flash disk that contains the latest BIOS file to the USB port, then launch
EZ Flash 2 in either of these two ways:
•
Press <Alt> + <F2> during POST.
•
Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and press <Enter> to enable it.
Press <Tab> to switch between drives until the correct BIOS file is found.
ASUSTek EZ Flash 2 BIOS ROM Utility V3.36
FLASH TYPE: WINBOND W25X80
Current ROM
BOARD: M4A785-M
VER: 0304 (H:00 B:02)
DATE: 07/29/2009
Update ROM
BOARD: Unknown
VER: Unknown
DATE: Unknown
PATH: C:\
C:
Note
[Enter] Select or Load [Tab] Switch
[Up/Down/Home/End] Move
[B] Backup
2.
2-2
[V] Drive Info
[ESC] Exit
When the correct BIOS file is found, EZ Flash 2 performs the BIOS update process
and automatically reboots the system when done.
Chapter 2: BIOS information
• This function supports USB flash disks with FAT 32/16 format and single partition only.
• DO NOT shut down or reset the system while updating the BIOS to prevent system boot
failure!
2.1.3
ASUS CrashFree BIOS
The ASUS CrashFree BIOS is an auto recovery tool that allows you to restore the BIOS file
when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS
file using the motherboard support DVD or a removable device that contains the updated
BIOS file.
• The BIOS file in the support DVD may not be the latest version. Download the latest
BIOS file from the ASUS website at www.asus.com.
• The removable devices that ASUS CrashFree BIOS support vary with motherboard
models. For motherboards without the floppy connector, prepare a USB flash disk before
using this utility.
Recovering the BIOS
To recover the BIOS:
1.
Turn on the system.
2.
Insert the support DVD to the optical drive or the removable device that contains the
BIOS file to the USB port or to the floppy disk drive, if supported.
3.
The utility automatically checks the devices for the BIOS file. When found, the utility
reads the BIOS file and starts flashing the corrupted BIOS file.
4.
Turn off the system after the utility completes the updating process and turn on again.
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select
the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for
details.
ASUS M4A785-M
2-3
2.2
BIOS setup program
Use the BIOS Setup program to update the BIOS or configure its parameters. The BIOS
screens include navigation keys and brief online help to guide you in using the BIOS Setup
program.
Entering BIOS Setup at startup
To enter BIOS Setup at startup:
• Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>,
POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Del> simultaneously.
•
•
Press the reset button on the system chassis.
Press the power button to turn the system off then back on. Do this option only if you
failed to enter BIOS Setup using the first two options.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force
reset from a running operating system can cause damage to your data or system. We
recommend that you always shut down the system properly from the operating system.
• The default BIOS settings for this motherboard apply to most conditions to ensure
optimum performance. If the system becomes unstable after changing any BIOS
settings, load the default settings to ensure system compatibility and stability. Select the
Load Setup Defaults item under the Exit menu. See section 2.8 Exit Menu.
• The BIOS setup screens in this chapter are for reference only. They may not exactly
match what you see on your screen.
• Visit the ASUS website at www.asus.com to download the latest BIOS file for this
motherboard.
2-4
Chapter 2: BIOS information
2.2.1
BIOS menu screen
Menu items
Main
Menu bar
Advanced
Configuration fields
Power
Main Settings
System Time
System Date
Primary IDE Master
Primary IDE Slave
SATA1
SATA2
SATA3
SATA4
SATA5
SATA6
SATA Configuration
General help
BIOS SETUP UTILITY
Boot
Tools
Exit
[19:34:30]
[Thu 01/03/2002]
:[Not
:[Not
:[Not
:[Not
:[Not
:[Not
:[Not
:[Not
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
Use [+] or [-] to
configure system
Time.
System Information
+-
Tab
F1
F10
ESC
Select Screen
Select Item
Change Field
Select Field
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
Submenu items
2.2.2
Navigation keys
Menu bar
The menu bar on top of the screen has the following main items:
Main
For changing the basic system configuration
Advanced
For changing the advanced system settings
Power
For changing the advanced power management (APM) configuration
Boot
For changing the system boot configuration
Tools
For configuring options for special functions
Exit
For selecting the exit options and loading default settings.
To select an item on the menu bar, press the right or left arrow key on the keyboard until the
desired item is highlighted.
2.2.3
Navigation keys
At the bottom right corner of a menu screen are the navigation keys for that particular menu.
Use the navigation keys to select items in the menu and change the settings.
Some of the navigation keys differ from one screen to another.
ASUS M4A785-M
2-5
2.2.4
Menu items
2.2.5
Submenu items
2.2.6
Configuration fields
2.2.7
Pop-up window
The highlighted item on the menu bar displays the specific items for that menu. For example,
selecting Main shows the Main menu items.
The other items (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their
respective menu items.
A solid triangle before each item on a menu screen means that the item has a submenu. To
display the submenu, select the item and press <Enter>.
These fields show the values for the menu items. If an item is user- configurable, you can
change the value of the field opposite the item. You cannot select an item that is not
user-configurable.
A configurable field is enclosed in brackets, and is highlighted when selected. To change the
value of a field, select it then press <Enter> to display a list of options. Refer to 2.2.7 Pop-up
window.
Select a menu item then press <Enter>
to display a pop-up window with the
configuration options for that item.
2.2.8
Scroll bar
A scroll bar appears on the right side of
a menu screen when there are items that
do not fit on the screen. Press the <Up> /
<Down> arrow keys or <Page Up> /<Page
Down> keys to display the other items on
the screen.
2.2.9
Advanced
BIOS SETUP UTILITY
CPU Configuration
Module Version: 13.55
AGESA Version: 3.5.2.0
AMD Phenom(tm) II X4 945 Processor
Revision: C2
Cache L1: 512KB
Cache L2: 2048KB
Cache L3: 6MB
Options
Speed
: 3000MHz, NB Cl Disabled
Able to Change Freq.: Yes Enabled
uCode Patch Level: 0x1
GART Error Reporting
[Disabled]
Microcode Updation [Enabled]
Secure Virtual Machine Mode [Disabled]
Cool ‘n‘ Quiet [Enalbed]
C1E Configuration [Disabled]
Advanced Clock Calibration [Disabled]
This option should
remain disabled for
the normal operation.
The driver developer
may enable it for
testing purpose.
F1
F10
ESC
Select Screen
Select Item
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
Pop-up window
Scroll bar
General help
At the top right corner of the menu screen is a brief description of the selected item.
2-6
Chapter 2: BIOS information
2.3
Main menu
When you enter the BIOS Setup program, the Main menu screen appears, giving you an
overview of the basic system information.
Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and
how to navigate through them.
Main
Advanced
Power
BIOS SETUP UTILITY
Boot
Tools
Exit
Main Settings
System Time
System Date
Primary IDE Master
Primary IDE Slave
SATA1
SATA2
SATA3
SATA4
SATA5
SATA6
SATA Configuration
[19:34:30]
[Thu 01/03/2002]
:[Not
:[Not
:[Not
:[Not
:[Not
:[Not
:[Not
:[Not
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Detected]
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
Use [+] or [-] to
configure system
Time.
System Information
+-
Tab
F1
F10
ESC
Select Screen
Select Item
Change Field
Select Field
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.3.1
System Time [xx:xx:xx]
2.3.2
System Date [Day xx/xx/xxxx]
2.3.3
Primary IDE Master/Slave, SATA 1~6
Allows you to set the system time.
Allows you to set the system date.
While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices.
There is a separate submenu for each IDE/SATA device. Select a device item then press
<Enter> to display the IDE/SATA device information.
The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size,
LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These
values are not user-configurable. These items show Not Detected if no IDE/SATA device is
installed in the system.
Type [Auto]
Selects the type of IDE/SATA drive. Setting this item to [Auto] allows automatic selection of
the appropriate IDE/SATA device type. Select [CDROM] if you are specifically configuring a
CD-ROM drive. Select [ARMD] (ATAPI Removable Media Device) if your device is either a
ZIP, LS-120, or MO drive. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD]
This item only appears in the Primary IDE Master/Slave, SATA5/6 menus.
ASUS M4A785-M
2-7
LBA/Large Mode [Auto]
Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the
device supports this mode, and if the device was not previously formatted with LBA mode
disabled. Configuration options: [Disabled] [Auto]
Block (Multi-Sector Transfer) M [Auto]
Enables or disables data multi-sectors transfers. When this item is set to [Auto], the data
transfer from and to the device occurs multiple sectors at a time if the device supports multisector transfer feature. When this item is set to [Disabled], the data transfer from and to the
device occurs one sector at a time. Configuration options: [Disabled] [Auto]
PIO Mode [Auto]
Selects the PIO mode. Configuration options: [Auto] [0] [1] [2] [3] [4]
DMA Mode [Auto]
Selects the DMA mode. Configuration options: [Auto]
SMART Monitoring [Auto]
Sets the Smart Monitoring, Analysis, and Reporting Technology.
Configuration options: [Auto] [Disabled] [Enabled]
32Bit Data Transfer [Enabled]
Enables or disables 32-bit data transfer. Configuration options: [Disabled] [Enabled]
2.3.4
SATA Configuration
The SATA Configuration menu allows you to configure your storage devices. Select an item
then press <Enter> to display the submenu.
OnChip SATA Channel [Enabled]
Enables or disables OnChip SATA Channel. Configuration options: [Disabled] [Enabled]
The following two items only appear when you set OnChip SATA Channel to [Enabled].
SATA Port1-Port4 [IDE]
Sets the SATA 1~4 type. Configuration options: [IDE] [RAID] [AHCI]
When this item is set to [IDE], SATA 5~6 can only be set to [IDE].
SATA Port5-Port6 [IDE]
Set the SATA 5~6 type. Configuration options: [IDE] [RAID] [AHCI]
When this item is set to [AHCI], SATA 5~6 can only be used under OS with AHCI driver
installed. Sets this item to [IDE] to use SATA 5~6 before entering OS.
2-8
Chapter 2: BIOS information
2.3.5
System Information
This menu gives you an overview of the general system specifications. The BIOS
automatically detects the items in this menu.
BIOS Information
Displays the auto-detected BIOS information.
Processor
Displays the auto-detected CPU specification.
System Memory
Displays the auto-detected system memory.
2.4
Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
Take caution when changing the settings of the Advanced menu items. Incorrect field
values can cause the system to malfunction.
Main
Advanced
Power
BIOS SETUP UTILITY
Boot
Tools
Exit
Advanced Settings
Adjust System
Frequency/Voltage etc.
JumperFree Configuration
CPU Configuration
Chipset
Onboard Devices Configuration
PCIPnP
USB Configuration
+-
Tab
F1
F10
ESC
Select Screen
Select Item
Change Field
Select Field
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.4.1
JumperFree Configuration
The items and configuration options in this menu may vary depending on the AMD CPU
type.
CPU Overclocking [Auto]
Selects the CPU overclocking options to achieve desired CPU internal frequency.
Configuration options: [Manual] [Auto] [Overclock Profile] [Test Mode]
ASUS M4A785-M
2-9
The following item only appears when you set CPU Overclocking to [Manual].
CPU/HT Reference Clock (MHz) [200]
Sets the CPU/HT Reference Clock. Configuration options: [Min.=200] [Max.=550]
The following item only appears when you set CPU Overclocking to [Overclock Profile].
Overclock Options [Auto]
Selects the overclocking profile. Configuration options: [Auto] [Overclock 2%]
[Overclock 5%] [Overclock 8%] [Overclock 10%]
GPU Overclocking [Auto]
Sets the GPU overclocking. Configuration options: [Auto] [Manual]
The following item only appears when you set GPU Overclocking to [Manual].
GPU Engine Clock [500]
Sets the GPU Engine Clock. Configuration options: [Min.=150] [Max.=1500]
PCIE Overclocking [Auto]
Sets the PCIE overclocking. Configuration options: [Auto] [Manual]
The following item only appears when you set PCIE Overclocking to [Manual].
PCIE Clock [100]
Sets the PCIE Clock. Configuration options: [Min.=100] [Max.=150]
Processor Frequency Multiplier [Auto]
Sets the processor frequency multiplier. Configuration options: [Auto] [x8.0 1600MHz]
[x8.5 1700MHz] [x9.0 1800MHz] [x9.5 1900MHz] [x10.0 2000MHz] [x10.5 2100MHz]
[x11.0 2200MHz] [x11.5 2300MHz] [x12.0 2400MHz] [x12.5 2500MHz] [x13.0 2600MHz]
[x13.5 2700MHz] [x14.0 2800MHz] [x14.5 2900MHz] [x15.0 3000MHz]
CPU Over Voltage [Auto]
Sets the CPU over voltage. Configuration options: [Auto]
VDDNB Over Voltage [Auto]
Sets the VDDNB over voltage. Configuration options: [Auto]
HT Link Frequency [Auto]
Sets the HyperTransport link speed. Configuration options: [Auto] [200MHz] [400MHz]
[600MHz] [800MHZ] [1000MHz] [1600MHz] [1800MHz] [2000MHz]
HT Link Width [Auto]
Sets the HyperTransport link width. Configuration options: [Auto] [8 Bit] [16 Bit]
2-10
Chapter 2: BIOS information
HT Over Voltage [Auto]
Sets the CPU over voltage. The values range from 1.20000V to 1.38000V with a 0.01500V
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Min.=1.20000V]
[Max.=1.38000V]
Memory Clock Mode [Auto]
Sets the memory clock mode. Configuration options: [Auto] [Manual]
The following item only appears when you set Memory Clock Mode to [Manual].
Memclock Value [400MHz]
Selects the DRAM frequency programming method. Configuration options: [200MHz]
[266MHz] [333MHz] [400MHz] [533MHz]
DRAM Timing Mode [Auto]
Sets the DRAM timing mode. Configuration options: [Auto] [DCT 0] [DCT 1] [Both]
The following sub-items appear only when you set the DRAM Timing Mode item to
[DCT 0], [DCT 1] or [Both].
TCL [Auto]
Configuration options: [Auto] [3 CLK] [4 CLK] [5 CLK] [6 CLK] [7 CLK DH_Only]
TRCD [Auto]
Configuration options: [Auto] [3 CLK] [4 CLK] [5 CLK] [6 CLK]
TRP [Auto]
Configuration options: [Auto] [3 CLK] [4 CLK] [5 CLK] [6 CLK]
tRTP [Auto]
Configuration options: [Auto] [2-4 CLK] [3-5 CLK]
TRAS [Auto]
Configuration options: [Auto] [5 CLK] ~ [18 CLK]
TRC [Auto]
Configuration options: [Auto] [11 CLK] ~ [26 CLK]
tWR [Auto]
Configuration options: [Auto] [3 CLK] [4 CLK] [5 CLK] [6 CLK]
TRRD [Auto]
Configuration options: [Auto] [2 CLK] [3 CLK] [4 CLK] [5 CLK]
tRWTTO [Auto]
Configuration options: [Auto] [3 CLK] ~ [17 CLK]
tWRRD [Auto]
Configuration options: [Auto] [1 CLK] [2 CLK] [3 CLK] [4 CLK]
tWTR [Auto]
Configuration options: [Auto] [1 CLK] [2 CLK] [3 CLK]
tWRWR [Auto]
Configuration options: [Auto] [1 CLK] [2 CLK] [3 CLK] [4 CLK]
ASUS M4A785-M
2-11
tRDRD [Auto]
Configuration options: [Auto] [3 CLK] [4 CLK] [5 CLK]
tRFC0/1/2/3 [Auto]
Configuration options: [Auto] [75ns] [105ns] [127.5ns] [195ns] [327.5ns]
Memory Over Voltage [Auto]
Sets the memory over voltage. The values range from 1.5000V to 2.4450V with a 0.0150V
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto]
[Max. = 2.4450V] [Min. = 1.5000V]
Chipset Over Voltage [Auto]
Sets the chipset over voltage. The values range from 1.10000V to 1.61000V with a 0.01500V
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto]
[Max. = 1.61000V] [Min. = 1.10000V]
2.4.2
CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
GART Error Reporting [Disabled]
This option should remain disabled for the normal operation. The driver developer may
enable it for testing purpose. Configuration options: [Disabled] [Enabled]
Microcode Updation [Enabled]
Enables or disables Microcode Updation. Configuration options: [Disabled] [Enabled]
Secure Virtual Machine Mode [Disabled]
Enables or disables Secure Virtual Machine Mode (SVM) Configuration options: [Disabled]
[Enabled]
Cool ‘n’ Quiet [Enabled]
Enables or disables the AMD Cool ‘n’ Quiet technology. Configuration options: [Enabled]
[Disabled]
CPU Prefetching [Enabled]
Enables or disables the CPU prefetching. Configuration options: [Enabled] [Disabled]
C1E Configuration [Disabled]
Enables or disables the CPU Enhanced Halt (C1E) function, a CPU power-saving function
in system halt state. When this item is enabled, the CPU core frequency and voltage will be
reduced during the system halt state to decrease power consumption.
Configuration options: [Disabled] [Enabled]
Advanced Clock Calibration [Disabled]
Adjusts the processor’s overclocking capability. When this item is set to [Auto], the BIOS
automatically adjusts this function. When this item is set to [All Cores], the processor has
the best overclocking performance. When this item is set to [Per Core], the processor’s
overclocking capability is enhanced.
Configuration options: [Disabled] [Auto] [All Cores] [Per Core]
2-12
Chapter 2: BIOS information
2.4.3
Chipset
NorthBridge Configuration
Memory Configuration
Bank Interleaving [Auto]
Allows you to enable the bank memory interleaving. Configuration options: [Disabled]
[Auto]
Channel Interleaving [XOR of Address bit]
Allows you to enable the channel memory interleaving.
Configuration options: [Disabled] [Address bits 6] [Address bits 12]
[XOR of Address bits [20:16, 6]] [XOR of Address bits [20:16, 9]]
Enable Clock to All DIMMs [Disabled]
Enables unused Clocks to DIMMs even though memory slots are not populated.
Configuration options: [Disabled] [Enabled]
MemClk Tristate C3/ATLVID [Disabled]
Enables or disables MemClk Tri-Stating during C3 and Alt VID.
Configuration options: [Disabled] [Enabled]
Memory Hole Remapping [Enabled]
Enables or disables memory remapping around memory hole.
Configuration options: [Disabled] [Enabled]
DCT Unganged Mode [Always]
Enables or disables the unganged DRAM mode (64-bit width).
Configuration options: [Auto] [Always]
Power Down Enable [Disabled]
Enables or disables the DDR power down mode. Configuration options: [Disabled]
[Enabled]
ECC Configuration
ECC Mode [Disabled]
Enables or disables the DRAM ECC that allows the hardware to report and correct
memory errors automatically. Configuration options: [Disabled] [Basic] [Good] [Super]
[Max] [User]
Internal Graphics
Primary Video Controller [GFX0-GPP-IGFX-PCI]
Allows you to set the primary video controller. Configuration options: [GFX0-GPP-IGFX-PCI]
[GPP-GFX0-IGFX-PCI] [PCI-GFX0-GPP-IGFX] [IGFX-GFX0-GPP-PCI]
GFX0:primary video controller on a PCIe x16 slot
GPP: primary video controller on a PCIe x1 slot
IGFX:onboard VGA port
PCI: primary video controller on a PCI slot
UMA Frame Buffer Size [Auto]
Configuration options: [Auto] [32MB] [64MB] [128MB] [256MB] [512MB]
ASUS M4A785-M
2-13
Surround View [Auto]
Disables or enables the Surround View function. Configuration options: [Auto] [Disabled]
[Enabled]
This item becomes user-configurable when you install an ATI graphics card into the
PCIe x16 slot.
Frame Buffer Location [Above 4G]
Configuration options: [Below 4G] [Above 4G]
AMD 785 HDMI Audio [Enabled]
Enables or disables AMD 785 HDMI audio. Configuration options: [Enabled] [Disabled]
2.4.4 Onboard Device Configuration
Serial Port1 Address [3F8/IRQ4]
Selects the Serial Port1 base address. Configuration options: [Disabled] [3F8/IRQ4]
[2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Parallel Port Address [378]
Selects the Parallel Port base addresses. Configuration options: [Disabled] [378] [278] [3BC]
Parallel Port Mode [Normal]
Selects the Parallel Port mode. Configuration options: [Normal] [EPP] [ECP] [EPP+ECP]
Parallel Port IRQ [IRQ7]
Allows BIOS to select the Parallel Port IRQ. Configuration options: [IRQ5] [IRQ7]
HDAudio Controller [Enabled]
Enables or disables the high definition audio controller. Configuration options: [Enabled]
[Disabled]
Front Panel Select [HD Audio]
Selects the front panel type. Configuration options: [HD Audio] [AC97]
OnBoard LAN Controller [Enabled]
Enables or disables the onboard LAN controller. Configuration options: [Enabled] [Disabled]
OnBoard LAN Boot ROM [Disabled]
Enables or disables the Onboard LAN Boot ROM. Configuration options: [Disabled]
[Enabled]
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Chapter 2: BIOS information
2.4.5
PCIPnP
The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA
devices and setting the memory size block for legacy ISA devices.
Take caution when changing the settings of the PCI PnP menu items. Incorrect field values
can cause the system to malfunction.
Plug And Play O/S [No]
When this item is set to [No], BIOS configures all the devices in the system. When this item
is set to [Yes] and if you install a Plug and Play operating system, the operating system
configures the Plug and Play devices not required for boot. Configuration options: [No] [Yes]
2.4.6
USB Configuration
The items in this menu allows you to change the USB-related features. Select an item then
press <Enter> to display the configuration options.
The Module Version and USB Devices Enabled items show the auto-detected values. If no
USB device is detected, the item shows None.
USB Functions [Enabled]
Enables or disables the USB functions. Configuration options: [Disabled] [Enabled]
USB 2.0 Controller [Enabled]
Enables or disables the USB 2.0 controller. Configuration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Enables or disables support for Legacy USB storage devices including USB flash drives and
USB hard drives. Setting this item to [Auto] allows the system to detect the presence of USB
devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device
is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled]
[Auto]
USB 2.0 Controller Mode [HiSpeed]
Configures the USB 2.0 controller in HiSpeed (480Mbps) mode or FullSpeed (12Mbps)
mode. Configuration options: [FullSpeed] [HiSpeed]
The following items only appear when a USB storage device is plugged in.
USB Mass Storage Device Configuration
USB Mass Storage Reset Delay [20 Sec]
Sets the maximum time that the BIOS waits for the USB storage device to initialize.
Configuration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]
Emulation Type [Auto]
Allows you to set the emulation type. Configuration options: [Auto] [Floppy]
[Forced FDD] [Hard Disk] [CDROM]
ASUS M4A785-M
2-15
2.5
Power menu
The Power menu items allow you to change the settings for the Advanced Configuration and
Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then
press <Enter> to display the configuration options.
Main
Advanced
Power
BIOS SETUP UTILITY
Boot
Tools
Exit
Power Settings
Suspend Mode
ACPI 2.0 Support
ACPI APIC support
[Auto]
[Enabled]
[Enabled]
APM Configuration
HW Monitor Configuration
Anti Surgy Support
[Enabled]
Select the ACPI state
used for System
Suspend.
+F1
F10
ESC
Select Screen
Select Item
Change Option
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.5.1
Suspend Mode [Auto]
2.5.2
ACPI 2.0 Support [Enabled]
2.5.3
ACPI APIC Support [Enabled]
2.5.4
APM Configuration
Selecta the Advanced Configuration and Power Interface (ACPI) state to be used for system
suspend. Configuration options: [S1 (POS) Only] [S3 Only] [Auto]
Enables or disables the Advanced Configuration and Power Interface (ACPI) 2.0 support.
Configuration options: [Disabled] [Enabled]
Enables or disables the Advanced Configuration and Power Interface (ACPI) support in the
Advanced Programmable Interrupt Controller (APIC). When this item is set to [Enabled], the
ACPI APIC table pointer is included in the RSDT pointer list. Configuration options: [Disabled]
[Enabled]
Restore on AC Power Loss [Power Off]
When this item set to [Power Off], the system goes into off state after an AC power loss.
When this item set to [Power On], the system goes on after an AC power loss.
Configuration options: [Power Off] [Power On] [Last State]
Power on From S5 By PME# [Disabled]
Enables or disables PME wake from sleep states. Configuration options: [Disabled] [Enabled]
Power on From S5 By Ring [Disabled]
Enables or disables ring to generate a wake event. Configuration options: [Disabled]
[Enabled]
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Chapter 2: BIOS information
Power on By PS/2 Keyboard [Disabled]
Enables or disables PS/2 Keyboard to generate a wake event.
Configuration options: [Disabled] [Space Bar] [Power Key] [Ctrl-Esc]
Power on From S5 By RTC Alarm [Disabled]
Enables or disables RTC to generate a wake event. Configuration options: [Disabled]
[Enabled]
2.5.5
HW Monitor Configuration
CPU/MB Temperature [xxxºC/xxxºF] or [Ignored]
The onboard hardware monitor automatically detects and displays the motherboard and CPU
temperatures. Select [Ignored] if you do not want the detected temperatures to be displayed.
CPU/Chassis Fan Speed [xxxxRPM] or [Ignored]
The onboard hardware monitor automatically detects and displays the CPU / Chassis fan
speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the field
shows N/A. Select [Ignored] if you do not wish to display the detected speed.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]
The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators. Select [Ignored] if you do not want the detected voltage to be displayed.
Smart Q-FAN Function [Disabled]
Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speed for
more efficient system operation. Configuration options: [Disabled] [Enabled]
2.5.6
Anti Surgy Support [Enabled]
Enables or disables the Anti Surgy support. Sets this item to [Enabled] to enable the UVP or
OVP protect function. Configuration options: [Disabled] [Enabled]
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2.6
Boot menu
The Boot menu items allow you to change the system boot options. Select an item then
press <Enter> to display the sub-menu.
Main
Advanced
Power
BIOS SETUP UTILITY
Boot
Tools
Exit
Boot Settings
Boot Device Priority
Boot Settings Configuration
Security
Specifies the Boot
Device Priority
sequence.
A virtual floppy disk
drive (Floppy Drive B:)
may appear when you set
the CD-ROM drive as the
first boot device.
Enter
F1
F10
ESC
Select Screen
Select Item
Go to Sub Screen
General Help
Save and Exit
Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.6.1
Boot Device Priority
1st ~ xxth Boot Device [xxx Drive]
These items specify the boot device priority sequence from the available devices. The
number of device items that appears on the screen depends on the number of devices
installed in the system. Configuration options: [Removable Dev.] [Hard Drive]
[ATAPI CD-ROM] [Disabled]
• To select the boot device during system startup, press <F8> when ASUS Logo appears.
• To access Windows® OS in Safe Mode, do any of the following:
•
Press <F5> when ASUS Logo appears.
•
Press <F8> after POST.
2.6.2
Boot Settings Configuration
Quick Boot [Enabled]
Enabling this item allows the BIOS to skip some power on self tests (POST) while booting
to decrease the time needed to boot the system. When this item is set to [Disabled], BIOS
performs all the POST items. Configuration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
Enables or disables the full screen logo display feature. Configuration options: [Disabled]
[Enabled]
Set this item to [Enabled] to use the ASUS MyLogo2™ feature.
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]
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Chapter 2: BIOS information
Bootup Num-Lock [On]
Selects the power-on state for the NumLock. Configuration options: [Off] [On]
Wait for ‘F1’ If Error [Enabled]
When this item is set to [Enabled], the system waits for the F1 key to be pressed when error
occurs. Configuration options: [Disabled] [Enabled]
Hit ‘DEL’ Message Display [Enabled]
When this item is set to [Enabled], the system displays the message Press DEL to run
Setup during POST. Configuration options: [Disabled] [Enabled]
2.6.3
Security
The Security menu items allow you to change the system security settings. Select an item
then press <Enter> to display the configuration options.
Change Supervisor Password
Select this item to set or change the supervisor password. The Supervisor Password item
on top of the screen shows the default Not Installed. After you set a password, this item
shows Installed.
To set a Supervisor Password:
1.
Select the Change Supervisor Password item and press <Enter>.
2.
In the password box, key in a password containing up to six letters or numbers, or
both, then press <Enter>.
3.
Confirm the password when prompted.
The message Password Installed appears after you successfully set your password.
To change the supervisor password, follow the same steps as in setting a supervisor
password.
To clear the supervisor password, select the Change Supervisor Password then press
<Enter> twice. The message Password uninstalled appears.
If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock
(RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.
After you have set a supervisor password, the other items appear to allow you to change
other security settings.
User Access Level [Full Access]
This item allows you to select the access restriction to the Setup items. Configuration options:
[No Access] [View Only] [Limited] [Full Access]
No Access prevents user access to the Setup utility.
View Only allows access but does not allow change to any field.
Limited allows changes only to selected fields, such as Date and Time.
Full Access allows viewing and changing all the fields in the Setup utility.
ASUS M4A785-M
2-19
Change User Password
Select this item to set or change the user password. The User Password item on top of the
screen shows the default Not Installed. After you set a password, this item shows Installed.
To set a User Password:
1.
Select the Change User Password item and press <Enter>.
2.
In the password box, key in a password containing up to six letters or numbers, or
both, then press <Enter>.
3.
Confirm the password when prompted.
The message “Password Installed” appears after you set your password successfully.
To change the user password, follow the same steps as in setting a user password.
Clear User Password
Select this item to clear the user password.
Password Check [Setup]
When this item is set to [Setup], BIOS checks for user password when accessing the
Setup utility. When this item is set to [Always], BIOS checks for user password both when
accessing Setup and booting the system. Configuration options: [Setup] [Always]
2.7
Tools menu
The Tools menu items allow you to configure options for special functions. Select an item
then press <Enter> to display the submenu.
Main
Advanced
BIOS SETUP UTILITY
Boot
Tools
Exit
Power
Tools Settings
ASUS EZ Flash 2
Express Gate
Enter OS Timer
Reset User Data
[Auto]
[10 Seconds]
[No]
AI NET2
Press ENTER to run the
utility to select and
update BIOS.
This utility supports:
1.FAT 12/16/32 (r/w)
2.NTFS (read only)
3.CD-DISC (read only)
Select Screen
Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.7.1
ASUS EZ Flash 2
Allows you to run ASUS EZ Flash 2. When you press <Enter>, a confirmation message
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to
confirm your choice.
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Chapter 2: BIOS information
2.7.2
Express Gate [Auto]
Enables or disables the ASUS Express Gate feature. ASUS Express Gate is a unique
instant-on environment that provides quick access to the Internet and Skype.
Configuration options: [Enabled] [Disabled] [Auto]
Enter OS Timer [10 Seconds]
Sets countdown duration that the system waits at the Express Gate’s first screen
before starting Windows or other installed OS. Choose [Prompt User] to stay at the
first screen of Express Gate for user action. Configuration options: [Prompt User]
[1 second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds]
[30 seconds]
Reset User Data [No]
Allows you to clear Express Gate’s user data. Configuration options: [No] [Reset]
When setting this item to [Reset], ensure to save the setting to the BIOS so that the
user data will be cleared the next time you enter the Express Gate. User data includes
the Express Gate’s settings as well as any personal information stored by the web
browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case
where corrupt settings prevent the Express Gate environment from launching properly.
The first time wizard will run again when you enter the Express Gate environment after
clearing its settings.
2.7.3
AI NET 2
Check Realtek LAN cable [Disabled]
Enables or disables checking of the Realtek LAN cable during the Power-On Self‑Test
(POST). Configuration options: [Disabled] [Enabled]
ASUS M4A785-M
2-21
2.8
Exit menu
The Exit menu items allow you to load the optimal or failsafe default values for the BIOS
items, and save or discard your changes to the BIOS items.
Main
Advanced
Power
Exit Options
Exit & Save Changes
Exit & Discard Changes
Discard Changes
Load Setup Defaults
BIOS SETUP UTILITY
Boot
Tools
Exit
Exitsystem
systemsetup
setup
Exit
aftersaving
savingthe
the
after
changes.
changes.
F10key
keycan
canbe
beused
used
F10
forthis
thisoperation.
operation.
for
Select Screen
Select Screen
Itemfrom this
Pressing <Esc> does not immediately exit this menu. Select one ofSelect
the
options
Select
Item
+Change
Option
menu or <F10> from the legend bar to exit.
EnterGeneral
Go to Sub-screen
F1
Help
Exit & Save Changes
F1
General
Help
F10
Save
and Exit
F10 Exit
Save and Exit
ESC
ESC
Exit
Once you are finished making your selections, choose this option from the Exit menu to
ensure the values you selected are saved to the CMOS RAM. An onboard backup battery
sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this
option, a confirmation window appears. Select OK to save changes and exit.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to the Setup
program. If you made changes to fields other than System Date, System Time, and
Password, the BIOS asks for a confirmation before exiting.
Discard Changes
This option allows you to discard the selections you made and restore the previously saved
values. After selecting this option, a confirmation appears. Select OK to discard any changes
and load the previously saved values.
Load Setup Defaults
This option allows you to load the default values for each of the parameters on the Setup
menus. When you select this option or if you press <F5>, a confirmation window appears.
Select OK to load default values. Select Exit & Save Changes or make other changes before
saving the values to the non-volatile RAM.
2-22
Chapter 2: BIOS information