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StarTech 4-Port USB 3.1 Gen2 PCIe Card - PEXUSB314A2V2

StarTech 4-Port USB 3.1 Gen2 PCIe Card - PEXUSB314A2V2
  • Wired-PCIE-Adapters-StarTech-4-Port-USB-3-1-Gen2-PCIe-Card-PEXUSB314A2V2-4
  • Wired-PCIE-Adapters-StarTech-4-Port-USB-3-1-Gen2-PCIe-Card-PEXUSB314A2V2-1
  • Wired-PCIE-Adapters-StarTech-4-Port-USB-3-1-Gen2-PCIe-Card-PEXUSB314A2V2-2
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  • Product Name:
    StarTech 4-Port USB 3.1 Gen2 PCIe Card - PEXUSB314A2V2
  • Model Number:
  • Brand:
  • Manufacturer Warranty:
    Limited Lifetime Warranty


StarTech 4-Port USB 3.1 Gen2 PCIe Card - PEXUSB314A2V2
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 four SuperSpeed USB-A (10Gbps) ports. The card features dual ASM3142 controllers with up to 20 Gbps of total bandwidth shared across all 4 ports.

Add Four 10 Gbps USB Type-A Ports to Your Desktop Computer
The controller card enables you to connect four 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 3.1 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).

SuperSpeed USB 3.2 Gen 2 (10 Gbps) Performance
The USB 3.2 Gen 2 card features dual ASMedia ASM3142 host controllers that utilizes x4 lanes of the PCIe 2.0 bus, making the card capable of speeds up to 10 Gbps on each port, and enabling fast access to high-performance devices like NVMe drives and SSDs. The controller cards support 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.

Wide Installation Compatibility
This add-on card includes a full-profile installation bracket ensuring you can install it into full-profile PCIe 2.0 x4 slots. 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


Connector Type(s)

1 - PCI Express x4             

Internal Ports

1 - SATA Power (15 pin) 

External Ports

4 - USB 3.2 Type-A (9 pin, Gen 2, 10Gbps)

Operating Temperature

5°C to 50°C (41°F to 122°F)         

Storage Temperature

-20°C to 60°C (-4°F to 140°F)      


20% ~ 80% RH   




PCI Express         

Bus Type

USB 3.2 Gen 2 10Gbps  

Card Type

Standard Profile

Port Style

Integrated on Card          

Industry Standards

USB 3.1 Specification Rev. 1.0 USB Specification Rev. 2.0 PCI Express Base Specification Rev. 2.0 Intel xHCI Specification Rev. 1.1 UASP (USB Attached SCSI Protocol) Rev. 1.0         

Chipset ID

ASMedia - ASM3142     

ASMedia - ASM1812     

Package Height

1.5 in [3.8 cm]  

Package Length

5.7 in [14.4 cm]

Shipping (Package) Weight

6.4 oz [180.0 g]

Package Width

8.1 in [20.7 cm]

Package Quantity


Total USB Power Output

4.5W (5V @ 0.9A) nominal, per port - Ports trip before 2.1A (10.5W) for Over-Current Protection

Maximum Data Transfer Rate

10Gbps per port              

Type and Rate

USB 3.2 Gen 2 - 10 Gbit/s             

UASP Support



40,000 Hours    



Product Height

0.7 in [1.9 cm]  

Product Length

4.7 in [12.0 cm]

Weight of Product

4.4 oz [125.0 g]

Product Width

5.9 in [15.0 cm]

OS Compatibility

Windows® 7, 8, 8.1, 10, 11          

Windows Server® 2012 R2, 2016, 2019, 2022     

macOS 10.13 to 10.15, 11.0, 12.0, 13.0, 14.0

Linux® 3.5 and up - LTS Versions only      

System and Cable Requirements

PCI Express enabled computer or server with a PCI Express x4 slot or higher (x8, x16)Optional SATA power connector         


This card can share up to 20Gbps of bandwidth (up to 10Gbps, per port). However, the maximum throughput of the card is limited by the maximum throughput of the PCI-Express interface it's connected through 

The available bandwidth (10Gbps) is shared equally between the two ports.         

Included in Package

1 - USB 3.1 Card

1 - Quick-Start Guide      

1 - Full Profile Bracket (Installed)



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