StarTech
.com 2-Port USB PCIe Card with 10Gbps/port - USB 3.2 Gen 2 Type-A PCI Express 3.0 x4 Host Controller Expansion Card - Add-On Adapter - Full/Low Profile - Windows & Linux (PEXUSB312A3)
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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. Add two 10 Gbps USB Type-A Ports to Your Desktop Computer 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…
SpecPicks Verdict
SpecPicks classifies StarTech.com 2-Port USB PCIe Card with 10Gbps/port - USB 3.2 Gen 2… as a solid pick with broad community endorsement in the expansion cards category, based on 84 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. StarTech's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Solid 4.4★ customer rating
- ✓ Backed by StarTech's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- HIGH PERFORMANCE: 2-Port USB PCIe Card with ASMedia ASM3142 host controller (PCIe 3.0 x4) has two SuperSpeed 10Gbps USB-A ports (USB 3.2 Gen 2); Speeds up to 10Gbps/port; Upgraded version of our popular USB card PEXUSB312A2
- MAXIMIZED USB PERFORMANCE: Add-on card supports Multiple Ins for max bandwidth when using mixed-speed devices; Supports UASP & optimized for SSDs/HDDs, NVMe, thumb drives; Supports USB 3.2 Gen 1/2.0 devices
- POWER: USB PCI Express 3.0 expansion card w/ SATA power header supplies supplemental power to the USB ports (when motherboard power is insufficient) providing up to 4.5W (5V @ 0.9A) per USB-A port
- COMPATIBILITY: USB PCIe adapter card installs in full or low-profile PCIe 3.0 x4 slot and up; Bracket included; Backward compatible w/ PCIe 2.0; Supports Win/Linux/macOS w/auto drivers on Win 8 & up
Full Specifications
| Brand | StarTech.com |
|---|---|
| Style | 2 USB-A |
| Style Name | 2 USB-A |
| Unit Count | 1.0 Count |
| Connectivity | USB |
| Model Number | PEXUSB312A3 |
| Compatibility | Mac, Linux |
| Built-In Media | Windows® 7, 8, 8.1, 10; Windows Server® 2012 R2, 2016, 2019; macOS 10.13 to 10.15, 11.0; Linux 3.5 or later |
| Mfr Part Number | PEXUSB312A3 |
| Operating System | Windows 8 |
| Compatible Devices | Personal Computers, Laptops, Servers |
| Hardware Interface | USB 3.2 Gen 2 |
| Warranty Description | Lifetime |
| Item Dimensions L x W x H | 3.9"L x 4.7"W x 0.7"H |
Ready to buy?
StarTech.com 2-Port USB PCIe Card with 10Gbps/port - USB 3.2 Gen 2 Type-A PCI Express 3.0 x4 Host Controller Expansion Card - Add-On Adapter - Full/Low Profile - Windows & Linux (PEXUSB312A3) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-23. Price and availability subject to change.
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