System setup. Dell OptiPlex 5090

4

System setup

CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program.

Certain changes can make your computer work incorrectly.

NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.

Use the BIOS Setup program for the following purposes:

● Get information about the hardware installed in your computer, such as the amount of RAM and the size of the hard drive.

● Change the system configuration information.

● Set or change a user-selectable option, such as the user password, type of hard drive installed, and enabling or disabling base devices.

Boot menu

Press <F12> when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the system.

Diagnostics and BIOS Setup options are also included in this menu. The devices listed on the boot menu depend on the bootable devices in the system. This menu is useful when you are attempting to boot to a particular device or to bring up the diagnostics for the system. Using the boot menu does not make any changes to the boot order stored in the BIOS.

The options are:

● UEFI Boot:

○ Windows Boot Manager

● Other Options:

○ BIOS Setup

○ BIOS Flash Update

○ Diagnostics

○ Change Boot Mode Settings

Navigation keys

NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the system.

Keys

Up arrow

Down arrow

Enter

Spacebar

Tab

Esc

Navigation

Moves to the previous field.

Moves to the next field.

Selects a value in the selected field (if applicable) or follow the link in the field.

Expands or collapses a drop-down list, if applicable.

Moves to the next focus area.

Moves to the previous page until you view the main screen. Pressing Esc in the main screen displays a message that prompts you to save any unsaved changes and restarts the system.

System setup 69

Boot Sequence

Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can:

● Access System Setup by pressing F2 key

● Bring up the one-time boot menu by pressing F12 key.

The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are:

● Removable Drive (if available)

● STXXXX Drive

NOTE: XXXX denotes the SATA drive number.

● Optical Drive (if available)

● SATA Hard Drive (if available)

● Diagnostics

NOTE: Choosing Diagnostics , displays the SupportAssist screen.

The boot sequence screen also displays the option to access the System Setup screen.

System setup options

NOTE: Depending on your computer and its installed devices, the items that are listed in this section may or may not appear.

Table 3. System setup options—System information menu

Overview

OptiPlex 5090 Tower

BIOS Version

Service Tag

Asset Tag

Manufacture Date

Ownership Date

Express Service Code

Ownership Tag

Signed Firmware Update

Processor Information

Processor Type

Maximum Clock Speed

Minimum Clock Speed

Current Clock Speed

Core Count

Processor ID

Processor L2 Cache

Processor L3 Cache

Microcode Version

Intel Hyper-Threading Capable

64-Bit Technology

Displays the BIOS version number.

Displays the Service Tag of the computer.

Displays the Asset Tag of the computer.

Displays the manufacture date of the computer.

Displays the ownership date of the computer.

Displays the express service code of the computer.

Displays the Ownership Tag of the computer.

Displays whether the Signed Firmware Update is enabled on your computer.

Displays the processor type.

Displays the maximum processor clock speed.

Displays the minimum processor clock speed.

Displays the current processor clock speed.

Displays the number of cores on the processor.

Displays the processor identification code.

Displays the processor L2 Cache size.

Displays the processor L3 Cache size.

Displays the microcode version.

Displays whether the processor is Hyper-Threading (HT) capable.

Displays whether 64-bit technology is used.

70 System setup

Table 3. System setup options—System information menu (continued)

Overview

Memory Information

Memory Installed

Memory Available

Memory Speed

Memory Channel Mode

Memory Technology

DIMM 1 Size

DIMM 2 Size

DIMM 3 Size

DIMM 4 Size

Devices Information

Video Controller

Video Memory

Wi-Fi Device

Native Resolution

Video BIOS Version

Audio Controller

Bluetooth Device

LOM MAC Address dGPU Video Controller

Slot 1

Slot 2

Slot 3

Slot 4

Displays the total computer memory installed.

Displays the total computer memory available.

Displays the memory speed.

Displays single or dual channel mode.

Displays the technology that is used for the memory.

Displays the DIMM 1 memory size.

Displays the DIMM 2 memory size.

Displays the DIMM 3 memory size.

Displays the DIMM 4 memory size.

Displays the video controller type of the computer.

Displays the video memory information of the computer.

Displays the wireless device information of the computer.

Displays the native resolution of the computer.

Displays the video BIOS version of the computer.

Displays the audio controller information of the computer.

Displays the Bluetooth device information of the computer.

Displays the LAN On Motherboard (LOM) MAC address of the computer.

Displays the discrete video controller type of the computer.

Displays the SATA hard drive information of the computer.

Displays the SATA hard drive information of the computer.

Displays the SATA hard drive information of the computer.

Displays the SATA hard drive information of the computer.

Table 4. System setup options—Boot Configuration menu

Boot Configuration

Boot Sequence

Boot Mode: UEFI only

Boot Sequence

Secure Digital (SD) Card Boot

Displays the boot mode.

Displays the boot sequence.

Enable or disable the SD card read-only boot.

By default, the Secure Digital (SD) Card Boot option is not enabled.

Secure Boot

Enable Secure Boot

Secure Boot Mode

Enable or disable the secure boot feature.

By default, the option is not enabled.

Enable or disable to change the secure boot mode options.

By default, the Deployed Mode is enabled.

Expert Key Management

Enable Custom Mode Enable or disable custom mode.

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Table 4. System setup options—Boot Configuration menu (continued)

Boot Configuration

Custom Mode Key Management

By default, the custom mode option is not enabled.

Select the custom values for expert key management.

Table 5. System setup options—Integrated Devices menu

Integrated Devices

Date/Time Displays the current date in MM/DD/YYYY format and current time in

HH:MM:SS AM/PM format.

Audio

Enable Audio Enable or disable the integrated audio controller.

By default, all the options are enabled.

Serial Port

Serial Port Configuration

USB Configuration

Enable or disable the serial port address.

By default, the COM1: Port is configured at 3F8h with IRQ4 option is enabled.

● Enable or disable booting from USB mass storage devices through the boot sequence or boot menu.

By default, all the options are enabled.

Front USB Configuration

Rear USB Configuration

Dust Filter Maintenance

Enable or disable the individual front USB ports.

By default, all the options are enabled.

Enable or disable the individual rear USB ports.

By default, all the options are enabled.

Enable or disable the dust filter maintenance.

By default, the Disabled option is enabled.

Table 6. System setup options—Storage menu

Storage

SATA Operation Enable or disable the operating mode of the integrated SATA hard drive controller.

By default, the RAID On option is enabled.

Storage Interface

Port Enablement Enable or disable the onboard drives.

By default, all the options are enabled.

SMART Reporting

Enable SMART Reporting Enable or disable Self-Monitoring, Analysis, and Reporting Technology

(SMART) during computer startup.

By default, the Enable SMART Reporting option is not enabled.

Drive Information

SATA-0

Type

Device

SATA-1

Displays the SATA HDD type information of the computer.

Displays the SATA HDD device information of the computer.

72 System setup

Table 6. System setup options—Storage menu (continued)

Storage

Type

Device

SATA-2

Type

Device

SATA-3

Type

Device

M.2 PCIe SSD-0

Type

Device

Enable MediaCard

Secure Digital (SD) Card

Displays the SATA HDD type information of the computer.

Displays the SATA HDD device information of the computer.

Displays the SATA HDD type information of the computer.

Displays the SATA HDD device information of the computer.

Displays the SATA HDD type information of the computer.

Displays the SATA HDD device information of the computer.

Displays the M.2 PCIe SSD-0 type information of the computer.

Displays the M.2 PCIe SSD-0 device information of the computer.

Enable or disable the SD card.

By default, the Secure Digital (SD) Card option is enabled.

Secure Digital (SD) Card Read-Only Mode Enable or disable the SD card read-only mode.

By default, the Secure Digital (SD) Card Read-Only Mode option is not enabled.

Table 7. System setup options—Display menu

Display

Multi-Display

Enable Multi-Display Enable or disable the Enable Multi-Display buttons on the computer.

By default, the option is enabled.

Primary Display

Video Primary Display

Full Screen Logo

Determines the primary display when multiple controllers are available on the computer

By default, the Auto option is enabled.

Enable or disable full screen logo.

By default, the option is not enabled.

Table 8. System setup options—Connection menu

Connection

Network Controller Configuration

Integrated NIC Controls the on-board LAN controller.

By default, the Enabled with PXE option is enabled.

Wireless Device Enable

WLAN

Bluetooth

Enable or disable the internal WLAN device

By default, the option enabled.

Enable or disable the internal Bluetooth device

By default, the option enabled.

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Table 8. System setup options—Connection menu (continued)

Connection

Enable UEFI Network Stack Enable or disable UEFI Network Stack and controls the on-board LAN

Controller.

By default, the option is enabled.

HTTPs Boot Feature

HTTPs Boot Enable or disable the HTTPs Boot feature.

By default, the HTTPs Boot option is enabled.

HTTPs Boot Mode With Auto Mode, the HTTPs Boot extracts Boot URL from the DHCP. With

Manual Mode, the HTTPs Boot reads Boot URL from the user-provided data.

By default, the Auto Mode option is enabled.

Table 9. System setup options—Power menu

Power

USB PowerShare

Enable USB PowerShare Enable or disable the USB PowerShare.

By default, the Enable USB PowerShare option is enabled

USB Wake Support

Enable USB Wake Support When enabled, you can use the USB devices like a mouse or keyboard to wake your computer from standby.

By default, the option is enabled.

AC Behavior

AC Recovery Enables the system to turn on automatically, when AC is inserted.

By default, the Power Off option is enabled.

Active State Power Management

Aspm

Block Sleep

Deep Sleep Control

Fan Control Override

Intel Speed Shift Technology

Enables or disables the Active State Power Management (ASPM) level

By default, the Auto option is enabled.

Enables to block entering sleep (S3) mode in the operating system.

By default, the Block Sleep option is disabled.

Enable or disable the Deep Sleep mode support.

By default, the Disabled option is enabled.

Enable or disable the fan control override feature.

By default, the option is disabled.

Enable or disable the Intel speed shift technology support.

By default, the Intel Speed Shift Technology option is enabled.

Table 10. System setup options—Security menu

Security

TPM 2.0 Security

TPM 2.0 Security On Enable or disable TPM 2.0 security options.

By default, the TPM 2.0 Security On option is enabled.

Attestation Enable Enables to control whether the Trusted Platform Module (TPM) Endorsement

Hierarchy is available to the operating system.

74 System setup

Table 10. System setup options—Security menu (continued)

Security

Key Storage Enable

SHA-256

Clear

PPI ByPass for Clear Commands

Chassis intrusion

SMM Security Mitigation

By default, the Attestation Enable option is enabled.

Enables to control whether the Trusted Platform Module (TPM) Storage

Hierarchy is available to the operating system.

By default, the Key Storage Enable option is enabled.

BIOS and the TPM will use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot.

By default, the SHA-256 option is enabled.

Enables to clear the TPM owner information and returns the TPM to the default state.

By default, the Clear option is disabled.

Controls the TPM Physical Presence Interface (PPI).

By default, the PPI ByPass for clear Commands option is disabled.

Controls the chassis intrusion feature.

By default, the option is disabled.

Enable or disable SMM Security Mitigation.

By default, the option is enabled.

Data Wipe on Next Boot

Start Data Wipe

Absolute

UEFI Boot Path Security

Enable or disable the data wipe on next boot.

By default, the option is disabled.

Enable or disable or permanently disable the BIOS module interface of the optional Absolute Persistence Module service from Absolute software.

By default, the Enable Absolute option is enabled.

Controls whether or not the computer will prompt the user to enter the admin password (if set) when booting to a UEFI boot device from the F12 boot menu.

By default, the Always Except Internal HDD option is enabled.

Table 11. System setup options—Passwords menu

Passwords

Admin Password

System Password

Internal HDD-0 Password

NVMe SSD0

Password Configuration

Upper Case Letter

Set, change, or delete the administrator password.

Set, change, or delete the computer password.

Set, change, or delete the Internal HDD-0 password.

Set, change, or delete the NVMe SSD0 password.

Reinforces password must have at least one upper case letter.

By default, the option is disabled.

Lower Case Letter

Digit

Special Character

Reinforces password must have at least one lower case letter.

By default, the option is disabled.

Reinforces password must have at least one digit.

By default, the option is disabled.

Reinforces password must have at least one special character.

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Table 11. System setup options—Passwords menu (continued)

Passwords

Minimum Characters

Password Bypass

By default, the option is disabled.

Set the minimum characters allowed for password.

When enabled, this always prompts for computer and internal hard drive passwords when powered on from the off state.

By default, the Disabled option is enabled.

Password Changes

Enable Non-Admin Password Changes Enable or disable to change computer and hard drive password without the need for admin password.

By default, the option is enabled.

Admin Setup Lockout

Enable Admin Setup Lockout Enables administrators control over how their users can or cannot access BIOS setup.

By default, the option is disabled.

Master Password Lockout

Enable Master Password Lockout When enabled, this will disable the master password support.

By default, the option is disabled.

Allow Non-Admin PSID Revert

Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt.

By default, the option is disabled.

Table 12. System setup options—Update, Recovery menu

Update, Recovery

UEFI Capsule Firmware Updates Enable or disable BIOS updates through UEFI capsule update packages.

By default, the option is enabled.

BIOS Recovery from Hard Drive Enables the user to recover from certain corrupted BIOS conditions from a recovery file on the user primary hard drive or an external USB key.

By default, the option is enabled.

BIOS Downgrade

Allow BIOS Downgrade

SupportAssist OS Recovery

BIOSConnect

Dell Auto OS Recovery Threshold

Enable or disable the flashing of the computer firmware to previous revision is blocked.

By default, the option is enabled.

Enable or disable the boot flow for SupportAssist OS Recovery tool in the event of certain computer errors.

By default, the option is enabled.

Enable or disable cloud Service OS recovery if the main operating system fails to boot with the number of failures equal to or greater than the value specified by the Auto OS Recovery Threshold setup option and local Service OS does not boot or is not installed.

By default, the option is enabled.

Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery Tool.

76 System setup

Table 12. System setup options—Update, Recovery menu (continued)

Update, Recovery

By default, the threshold value is set to 2.

Table 13. System setup options—System Management menu

System Management

Service Tag

Asset Tag

Wake on LAN/WLAN

Display the Service Tag of the computer.

Create a computer Asset Tag.

Enable or disable the computer to power on by special LAN signals when it receives a wakeup signal from the WLAN.

By default, the Disabled option is selected.

Auto on Time Enable to set the computer to turn on automatically every day or on a preselected date and time. This option can be configured only if the Auto On

Time is set to Everyday, Weekdays, or Selected Days.

By default, the option is disabled.

Intel AMT Capability

Enable Intel AMT Capability

MEBx Hotkey

Enable or disable the Intel AMT capabilty.

By default, the Restrict MEBx Access option is enabled.

Enable or disable MEBx hotkey.

By default, the option is disabled.

USB Provision

Enable USB Provision

SERR Messages

Enable or disable the Intel AMT provisioning using the local provisioning file through a USB storage device.

By default, the option is disabled.

Enable or disable SERR messages.

By default, the option is enabled.

Dell Development Configuration

Enable Flash Updated Signature Override Enable or disable certain features to control BIOS

By default, the option is disabled.

Table 14. System setup options—Keyboard menu

Keyboard

Keyboard Errors

Enable Keyboard Error Detection Enable or disable the keyboard error detection.

By default, the option is enabled.

Numlock LED

Enable Numlock LED Enable or disable Numlock LED.

By default, the option is enabled.

Device Configuration Hotkey Access

Device Configuration Hotkey Access Enable or disable users to access device configuration by using hotkeys.

By default, the option is enabled.

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Table 15. System setup options—Pre-boot Behavior menu

Pre-boot Behavior

Warning and Errors Enable or disable the action to be done when a warning or error is encountered.

By default, the Prompt on Warnings and Errors option is enabled.

Fastboot

Extend BIOS POST Time

Enable to set the speed of the boot process.

By default, the Minimal option is enabled.

Set the BIOS POST time.

By default, the 0 seconds option is enabled.

Table 16. System setup options—Virtualization menu

Virtualization

Intel Virtualization Technology

Enable Intel Virtualization Technology

(VT)

Specify whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities that are provided by Intel Virtualization Technology.

By default, the option is enabled.

VT for Direct I/O Specify whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities that are provided by Intel Virtualization Technology for

Direct I/O.

By default, the option is enabled.

Intel Trusted Execution Technology

(TXT)

Enable Intel Trusted Execution

Technology (TXT)

Specifies whether a measured Virtual Machine Monitor (MVMM) can utilize the additional hardware capabilities that are provided by Intel Trusted Execution

Technology.

By default, the option is disabled.

Table 17. System setup options—Performance menu

Performance

Multi Core Support

Active Cores Enables to change the number of CPU cores available to the operating system.

By default, the All Cores options are enabled.

Intel SpeedStep

Enable Intel SpeedStep Technology Enables the computer to dynamically adjust processor voltage and core frequency, decreasing average power consumption and heat production.

By default, the option is enabled.

C-States Control

Enable C-State Control Enable or disable additional processor sleep states.

By default, the option is enabled.

Intel Turbo Boost Technology

Enable Intel Turbo Boost Technology Enable or disable Intel TurboBoost mode of the processor.

By default, the option is enabled.

Intel Hyper-Threading Technology

Enable Intel Hyper-Threading Technology Enable or disable Hyper-Threading in the processor.

By default, the option is enabled.

78 System setup

Table 18. System setup options—System Logs menu

System Logs

BIOS Event Log

Clear BIOS Event Log Display BIOS events.

By default, the Keep option is enabled.

Updating the BIOS

Updating the BIOS in Windows

About this task

CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https:// www.dell.com/support/article/sln153694

Steps

1. Go to www.dell.com/support .

2. Click Product support . In the Search support box, enter the Service Tag of your computer, and then click Search .

NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You can also use the product ID or manually browse for your computer model.

3. Click Drivers & Downloads . Expand Find drivers .

4. Select the operating system installed on your computer.

5. In the Category drop-down list, select BIOS .

6. Select the latest version of BIOS, and click Download to download the BIOS file for your computer.

7. After the download is complete, browse the folder where you saved the BIOS update file.

8. Double-click the BIOS update file icon and follow the on-screen instructions.

For more information, see knowledge base article 000124211 at www.dell.com/support .

Updating the BIOS in Linux and Ubuntu

To update the system BIOS on a computer that is installed with Linux or Ubuntu, see the knowledge base article 000131486 at www.dell.com/support .

Updating the BIOS using the USB drive in Windows

About this task

CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https:// www.dell.com/support/article/sln153694

Steps

1. Follow the procedure from step 1 to step 6 in

Updating the BIOS in Windows

to download the latest BIOS setup program file.

System setup 79

2. Create a bootable USB drive. For more information, see the knowledge base article 000145519 at www.dell.com/support .

3. Copy the BIOS setup program file to the bootable USB drive.

4. Connect the bootable USB drive to the computer that needs the BIOS update.

5. Restart the computer and press F12 .

6. Select the USB drive from the One Time Boot Menu .

7. Type the BIOS setup program filename and press Enter .

The BIOS Update Utility appears.

8. Follow the on-screen instructions to complete the BIOS update.

Updating the BIOS from the F12 One-Time boot menu

Update your computer BIOS using the BIOS update.exe file that is copied to a FAT32 USB drive and booting from the F12

One-Time boot menu.

About this task

CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https:// www.dell.com/support/article/sln153694

BIOS Update

You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12

One-Time boot menu on the computer.

Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12

One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the

BIOS supports this BIOS update option.

NOTE: Only computers with BIOS Flash Update option in the F12 One-Time boot menu can use this function.

Updating from the One-Time boot menu

To update your BIOS from the F12 One-Time boot menu, you need the following:

● USB drive formatted to the FAT32 file system (key does not have to be bootable)

● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive

● AC power adapter that is connected to the computer

● Functional computer battery to flash the BIOS

Perform the following steps to perform the BIOS update flash process from the F12 menu:

CAUTION: Do not turn off the computer during the BIOS update process. The computer may not boot if you turn off your computer.

Steps

1. From a turn off state, insert the USB drive where you copied the flash into a USB port of the computer.

2. Turn on the computer and press F12 to access the One-Time Boot Menu, select BIOS Update using the mouse or arrow keys then press Enter.

The flash BIOS menu is displayed.

3. Click Flash from file .

4. Select external USB device.

5. Select the file and double-click the flash target file, and then click Submit .

6. Click Update BIOS . The computer restarts to flash the BIOS.

7. The computer will restart after the BIOS update is completed.

80 System setup

System and setup password

Table 19. System and setup password

Password type

System password

Setup password

Description

Password that you must enter to log on to your system.

Password that you must enter to access and make changes to the BIOS settings of your computer.

You can create a system password and a setup password to secure your computer.

CAUTION: The password features provide a basic level of security for the data on your computer.

CAUTION: Anyone can access the data stored on your computer if it is not locked and left unattended.

NOTE: System and setup password feature is disabled.

Assigning a system setup password

Prerequisites

You can assign a new System or Admin Password only when the status is in Not Set .

About this task

To enter the system setup, press F2 immediately after a power-on or reboot.

Steps

1. In the System BIOS or System Setup screen, select Security and press Enter .

The Security screen is displayed.

2. Select System/Admin Password and create a password in the Enter the new password field.

Use the following guidelines to assign the system password:

● A password can have up to 32 characters.

● The password can contain the numbers 0 through 9.

● Only lower case letters are valid, upper case letters are not allowed.

● Only the following special characters are allowed: space, (”), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`).

3. Type the system password that you entered earlier in the Confirm new password field and click OK .

4. Press Esc and a message prompts you to save the changes.

5. Press Y to save the changes.

The computer reboots.

Deleting or changing an existing system setup password

Prerequisites

Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing

System and Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is

Locked.

About this task

To enter the System Setup, press F2 immediately after a power-on or reboot.

Steps

1. In the System BIOS or System Setup screen, select System Security and press Enter .

System setup 81

The System Security screen is displayed.

2. In the System Security screen, verify that Password Status is Unlocked .

3. Select System Password , alter or delete the existing system password and press Enter or Tab .

4. Select Setup Password , alter or delete the existing setup password and press Enter or Tab .

NOTE: If you change the System and/or Setup password, re enter the new password when prompted. If you delete the

System and Setup password, confirm the deletion when prompted.

5. Press Esc and a message prompts you to save the changes.

6. Press Y to save the changes and exit from System Setup.

The computer restarts.

82 System setup