StarTech Controller Card PEXUSB314A2V2 4Port USB PCI Express Card with 2 Controllers


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SKU: AS251642 Categories: ,

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 3.0 and USB 3.1 (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 3.1/3.0/2.0 devices
1 – Connector Type(s)
PCI Express x4
1 – Internal Ports
SATA Power (15 pin)
4 – External Ports
USB 3.1 USB Type-A (9 pin, Gen 2, 10 Gbps)
Operating Temperature
5oC to 50oC(41oF to 122oF)
Storage Temperature
-20oC to 60oC(-4oF to 140oF)
20% to 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
Total USB Power Output
4.5W (5V at 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 3.1 Gen 2 – 10 Gbit/s
UASP Support
40,000 Hours
Physical Characteristics
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
Linux 3.5 or later LTS version only
Special Notes / Requirements
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 its connected through
The available bandwidth (10Gbps) is shared equally between the two ports.
Whats in the Box
1 – Included in Package
USB 3.1 Card
Quick-Start Guide
Full Profile Bracket (Installed)
Item Dimension (L inchxW inchxH inch)
6 x 9 x 2

1.00 lb

Warranty Information
Lifetime Warranty

Weight 1.00 lbs







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