STARTECH 

STARTECH PEXUSB321C USB C 3.2 GEN2X2 PCIE CARD 20GBPS PCI EXPRESS X4

Mfg Part Number:  PEXUSB321C  
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Price: $56.03
Quantity:
In Stock: 868
Last Updated: Aug 13, 2025
No Sales Tax except these states
, PO and Wire.

This PCIe USB 3.2 Gen 2x2 controller card installs into an available PCI-Express x4 slot in your computer and enables you to upgrade your current system by adding a USB-C (20Gbps) port.
The controller card enables you to connect USB-C Gen 2x2 (20 Gbps) devices to your desktop computer. The USB-C port is ideal for connecting USB devices such as external hard drives and solid state drives or charging and syncing your mobile devices. The USB-C port provides up to 15W (5V/3A) of power and is backward compatible with USB 3.2 Gen 2 (10 Gbps) and USB 3.2 Gen 1 (5 Gbps) devices.
Note: USB 3.2 Gen 2 (10 Gbps) is also know as USB 3.1 Gen 2 (10 Gbps), and USB 3.2 Gen 1 (5 Gbps) is also know as USB 3.1 Gen 1 and USB 3.0 (5 Gbps).
The USB 3.2 Gen 2x2 card features an ASMedia ASM3242 host controller that utilizes x4 lanes of the PCIe 3.0 bus, making the card capable of speeds up to 20Gbps 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 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
PEXUSB321C is backed by a StarTech.com 2-year warranty and free lifetime 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 PEXUSB321C
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name PCI Express USB Card
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 1
Number of USB 3.2 Ports 1
Software
Operating System Supported Windows 8.1
Operating System Supported Windows 8
Operating System Supported Mac OS X 10.14 Mojave
Operating System Supported Windows Server 2022
Operating System Supported Linux 3.5
Operating System Supported Mac OS X 13.0 Ventura
Operating System Supported Mac OS X 12.0 Monterey
Operating System Supported Windows Server 2012 R2
Operating System Supported Windows Server 2016
Operating System Supported Windows Server 2019
Operating System Supported Windows 11
Operating System Supported Mac OS X 10.13 High Sierra
Operating System Supported Windows 10
Operating System Supported Mac OS X 11.0 Big Sur
Operating System Supported Mac OS X 10.15 Catalina
Physical Characteristics
Color Family Red
Product Color Red
Form Factor Plug-in Card
Height 0.9"
Width 3.1"
Length 2"
Weight (Approximate) 1.30 oz
Miscellaneous
Package Contents
  • PCI Express USB Card
  • 1x Full Profile Bracket (Installed)
  • 1x Low Profile Bracket
  • 1x Quick-Start Guide
Additional Information

OS Compatibility:

  • Windows® 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 Linux
Platform Supported PC
Platform Supported Mac
Country of Origin Taiwan
Environmentally Friendly Yes
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Warranty
Limited Warranty 2 Year
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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