4-Port PCI Express USB 3.0 Card
4-Port PCI Express USB 3.0 Card
Product ID: PEXUSB3S42
Here’s a cost-effective solution for adding USB 3.0 connectivity to your computer. This 4-port PCIe USB
3.0 card gives you three external ports and one internal port, for the ultimate connection flexibility.
Enjoy convenient USB 3.0 port availability
With three external USB 3.0 ports you can connect more devices to your computer. The card provides
easy access to commonly-used peripherals such as your tablet and external hard drive. It also features an
internal USB port that lets you connect a device such as a flash drive inside your computer case, providing
added security and convenience.
USB 3.0 gives you fast access to your files with data transfer rates up to 5 Gbps. Plus it's backward
compatible with USB 2.0 and 1.x devices, which eliminates the cost and aggravation of upgrading your
existing devices.
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Get up and running quickly
Setup is a breeze with native operating system support. The USB 3.0 adapter card automatically installs in
Windows® 8.1, 8 and 7.
For convenient installation, this PCI Express USB 3.0 card features a dual-profile design that can be
installed in almost any type of computer. It comes equipped with a standard profile bracket and also
includes a low-profile bracket for installation in small form-factor/half-height systems.
UASP support for more efficient data transfers
This high-performance USB 3.0 card is enhanced with UASP support, which can perform ~70% faster read
speed and ~40% faster write speed over traditional USB 3.0, when paired with UASP-enabled enclosure.
The PEXUSB3S42 is backed by a StarTech.com 2year warranty and free lifetime technical support.
Note: UASP (USB Attached SCSI Protocol) is
supported in Windows 8.1, 8, Server 2012 and
Linux kernel 2.6.37 or later. Test results were
obtained using an Intel® Ivy Bridge system,
StarTech.com add-on USB 3.0 cards, a UASPenabled StarTech.com enclosure, and a SATA III
solid state drive.
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Certifications, Reports
and Compatibility
Enhance the connection capabilities of your PCI Express enabled
computer or server
Connect external hard drives, tablets, smartphones, CD/DVD drives,
webcams or game controllers to your computer
Connect your flash drive or other devices to the internal USB 3.0 port
for a secure connection
Expands your computer connectivity with four extra USB 3.0 ports (3
external, 1 internal)
Easy to install with native OS support in Windows 8.1, 8, 7, and
Linux kernel 2.6.31 or later
Fits standard or small form-factor computers, low-profile bracket
Data transfer rates up to 5 Gbps plus UASP support
Backward compatible with USB 2.0 and 1.x devices
Built-in optional SATA power connector provides up to 900mA per
USB port
PCIe x1 interface, compliant with PCI Express 2.0 specifications
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2 Years
Bus Type
PCI Express
Card Type
Standard Profile (LP bracket incl.)
Chipset ID
Industry Standards
USB 3.0 Specification Rev. 1.0
PCI Express Base Specification Rev. 2.0
Intel xHCI Specification Rev. 1.0
USB 3.0
Port Style
Integrated on Card
Maximum Cable Length
3 m [9.8 ft]
Maximum Data Transfer Rate
5 Gbps
Type and Rate
USB 3.0 - 5 Gbit/s
UASP Support
Connector Type(s)
1 - PCI Express x1 Male
External Ports
3 - USB Type-A (9 pin) USB 3.0 Female
Internal Ports
1 - SATA Power (15 pin) Plug
1 - USB Type-A (9 pin) USB 3.0 Female
OS Compatibility
Windows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2008 R2, 2012, 2012 R2, 2016
Linux 2.6.31 to 4.11.x LTS Versions only
Special Notes /
The maximum throughput of this card is limited by the bus
interface. If used with PCI Express Gen 1.0 enabled
computers, the max throughput is 2.5 Gbps. If used with
PCI Express Gen 2.0 enabled computers, the max
throughput is 5 Gbps.
System and Cable Requirements
PCI Express enabled computer or server with an available
PCI Express x1 slot or higher (x4, x8, x16)
SATA power connector (recommended, but optional)
20~80% RH
Operating Temperature
5°C to 50°C (41°F to 122°F)
Storage Temperature
-20°C to 60°C (-4°F to 140°F)
Product Height
120 mm [4.7 in]
Product Length
87 mm [3.4 in]
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Product Weight
59 g [2.1 oz]
Product Width
19 mm [0.7 in]
Shipping (Package) Weight
143 g [5 oz]
What's in the Box
Included in Package
1 - 4 Port PCI Express USB 3.0 Card
1 - Low-Profile Bracket
1 - Driver CD
1 - Instruction Manual
Product appearance and specifications are subject to change without notice.
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