STARTECH 

STARTECH PEXUSB312A3 USB A 3.2 GEN2 PCIE CARD 10GBPS PCI EXPRESS X2

Mfg Part Number:  PEXUSB312A3  
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Price: $74.99 + Free Shipping
Quantity:
In Stock: 306
Last Updated: Jun 22, 2025
No Sales Tax except these states
, PO and Wire.

This PCIe USB 3.2 Gen 2 controller card installs into an available PCI-Express x4 slot in your computer and enables you to upgrade your current system by adding two SuperSpeed USB-A (10Gbps) ports.
The controller card enables you to connect two USB-A Gen 2 (10 Gbps) devices to your desktop computer. The USB-A ports are ideal for connecting USB devices such as external hard drives and solid state drives or powering and syncing your mobile devices. The USB-A ports provides up to 4.5W (5V/0.9A) of power per USB port, and are backward compatible with USB 3.2 Gen 1 (5 Gbps), and USB 2.0 (480 Mbsp) devices.
Note: USB 3.2 Gen 2 (10 Gbps) is also know as USB 3.2 Gen 2 (10 Gbps), and USB 3.2 Gen 1 (5 Gbps) is also know as USB 3.2 Gen 1 and USB 3.2 (5 Gbps).
The USB 3.2 Gen 2 card features an ASMedia ASM3142 host controller that utilizes x2 lanes of the PCIe 3.0 bus, making the card capable of speeds up to 10Gbps on each port, and enabling fast access to high-performance devices like NVMe drives and SSDs. The controller card supports Multiple INs to reduce bandwidth loss when multiple devices are connected, even when connected through a USB Hub (Note: The USB hub must also support this feature). The card also supports UASP for improved performance with storage devices.
This add-on card includes both full-profile and low-profile installation brackets ensuring you can install it into either a full or low-profile PCIe 3.0 x4 slot (backward compatible w/PCIe 2.0). For wide platform support the card is compatible with Windows, Linux and macOS. For hassle-free installation the drivers install automatically on computers running Windows 8 or higher. Works w/USB 3.2/3.0/2.0 devices
PEXUSB312A3 is backed by a StarTech.com lifetime warranty with free 24/5 multi-lingual North American based technical support. StarTech.com has been the IT professionals' choice for over 30 years.

More from the Manufacturer

More from the Manufacturer

Main Specification
General Information
Manufacturer StarTech.com
Manufacturer Part Number PEXUSB312A3
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name USB Adapter
Packaged Quantity 1 Each
Product Type USB Adapter
Technical Information
Host Interface PCI Express x4
Media & Performance
UASP Support Yes
Interfaces/Ports
Total Number of USB Ports 2
Number of USB 3.2 Ports 2
Number of SATA Ports 1
Software
Operating System Supported Mac OS X 10.15 Catalina
Operating System Supported Windows 11
Operating System Supported Windows 7
Operating System Supported Windows Server 2022
Operating System Supported Mac OS X 10.14 Mojave
Operating System Supported Mac OS X 10.13 High Sierra
Operating System Supported Windows 8
Operating System Supported Windows 8.1
Operating System Supported Windows 10
Operating System Supported Mac OS X 12.0 Monterey
Operating System Supported Linux 3.5
Operating System Supported Mac OS X 13.0 Ventura
Operating System Supported Mac OS X 11.0 Big Sur
Operating System Supported Windows Server 2012 R2
Operating System Supported Windows Server 2016
Operating System Supported Windows Server 2019
Physical Characteristics
Color Family Black
Product Color Black
Form Factor Plug-in Card
Height 0.7"
Width 4.7"
Length 4.3"
Weight (Approximate) 2.80 oz
Miscellaneous
Package Contents
  • USB Adapter
  • 1x Low-Profile Bracket
  • 1x Quick Start Guide
  • 1x Full-Profile Bracket (Pre-Installed)
Additional Information

OS Compatibility:

  • Windows® 7, 8, 8.1, 10, 11
  • Windows Server® 2012 R2, 2016, 2019
  • macOS 10.13 to 10.15, 11.0, 12.0, 13.0
  • Linux® 3.5 and up - LTS Versions only
Platform Supported PC
Platform Supported Mac
Platform Supported Linux
Country of Origin China
Environmentally Friendly Yes
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Warranty
Limited Warranty Lifetime
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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