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StarTech 2-Port 10Gbps USB-A & USB-C PCIe Card, Windows, TAA (PEXUSB311AC3) | USB 3.2 Gen 2 PCI Express Type C/A Host Controller Card Adapter, USB 3.2 Gen 2 PCIe Expansion Add-On Card, macOS, Linux
StarTech.com

StarTech.com StarTech 2-Port 10Gbps USB-A & USB-C PCIe Card

Bottom line: The StarTech.com StarTech 2-Port 10Gbps USB-A & USB-C PCIe Card: 10Gbps per port on both USB-A and USB-C, double USB 3.0 throughput; main trade-off: needs a free PCIe 3.0 x4 slot; PCIe 2.0 slots cut throughput.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 10Gbps per port on both USB-A and USB-C, double USB 3.0 throughput
  • ✓ SATA power input feeds 5V 3A/15W to USB-C when board power falls short
  • ✓ UASP support speeds up external SSD, HDD and NVMe enclosures
  • ✓ Multiple INs design holds full bandwidth with mixed-speed devices attached
  • ✓ Ships with full-height and low-profile brackets for slim desktop and server cases

Cons

  • ✗ Needs a free PCIe 3.0 x4 slot; PCIe 2.0 slots cut throughput
  • ✗ USB-A port caps at 4.5W, too little for power-hungry bus-driven drives
  • ✗ Windows driver support starts at Windows 8, no older retro-PC builds

Manufacturer description

This USB 3.1 Gen 2 card lets you add one USB-C™ port and one USB-A port to your computer, through a PCI Express slot. It enables you to upgrade your current system by adding two USB 3.1 Gen 2 ports to your computer and giving you access to data transfer speeds up to 10Gbps per port. USB 3.1 Gen 2 (also known as USB 3.2 Gen 2x1) PCIe Add-On card supports Multiple INs, maintains optimal bandwidth even when mixed speed devices are connected.Plus, by adding one USB-C and one USB-A port to your PC, you can easily connect legacy, modern, and future USB devices, regardless of the USB connector…

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SpecPicks Verdict

SpecPicks scored StarTech.com StarTech 2-Port 10Gbps USB-A & USB-C PCIe Card using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. StarTech.com's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • HIGH PERFORMANCE: USB 3.1 Gen 2 or USB 3.2 Gen 2x1 PCIe Add-On card supports Multiple INs, maintains max bandwidth even when mixed speed devices are connected; 10Gbps per port; 1x USB-A & 1x USB-C | Upgraded version of our popular card PEXUSB311AC2
  • POWER: Expansion card w/ SATA power supplies supplemental power to the USB ports (when motherboard power is insufficient) providing up to 5V 3A/15W via the USB-C port & 5V 0.9A/4.5W via the USB-A port
  • MAX PERFORMANCE WITH USB DEVICES: 2-port USB-A & USB-C PCIe card adapter supports USB Attached SCSI Protocol (UASP) optimizing USB performance w/ external storage devices like SSDs, HDDs, NVMe drives
  • COMPATIBILITY: Installs in full or low-profile PCIe 3.0 x4 desktop/server slot (lower performance w/PCI-e 2.0); Windows/Linux/macOS auto driver install (Windows 8 & up); Works with USB 3.2/3.1/3.0/2.0

Full Specifications

BrandStarTech.com
StyleA + C Ports
Style NameA + C Ports
Unit Count1 Count
ConnectivityUSB-C
Model NumberPEXUSB311AC3
CompatibilityMac, Linux
Item Type NameUSB Adapter
Mfr Part NumberPEXUSB311AC3
Hardware InterfacePCI, SCSI, USB, USB 3.1 Type A, USB Type C
Warranty Description2 Year
Item Dimensions L x W x H4.7"L x 3.2"W x 0.7"H
Global Trade Identification Number00065030887083
Full listing titleStarTech 2-Port 10Gbps USB-A & USB-C PCIe Card, Windows, TAA (PEXUSB311AC3) | USB 3.2 Gen 2 PCI Express Type C/A Host Controller Card Adapter, USB 3.2 Gen 2 PCIe Expansion Add-On Card, macOS, Linux

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StarTech 2-Port 10Gbps USB-A & USB-C PCIe Card, Windows, TAA (PEXUSB311AC3) | USB 3.2 Gen 2 PCI Express Type C/A Host Controller Card Adapter, USB 3.2 Gen 2 PCIe Expansion Add-On Card, macOS, Linux is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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StarTech 2-Port 10Gbps USB-A & USB-C PCIe Card, Windows, TAA (PEXUSB311AC3) | USB 3.2 Gen 2 PCI Express Type C/A Host Controller Card Adapter, USB 3.2 Gen 2 PCIe Expansion Add-On Card, macOS, Linux
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