StarTech.com 2-Port 10Gbps USB-A/USB-C PCIe Card -USB 3.1 Gen 2 PCI Express

StarTech.com PEXUSB311AC3

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Manufacturer Part#  PEXUSB311AC3

UPC Code: 065030887083

Provantage Code:  STR9584

Condition:  Factory New

  • Limited Warranty: 2 Year
  • Country of Origin: Taiwan
  • Form Factor: Plug-in Card
  • Product Color: Red
  • Host Interface: PCI Express x4
  • TAA Compliant: Yes

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NetworkingNetwork DevicesVarious Network Devices


StarTech.com PEXUSB311AC3 Specifications

    2-Port 10Gbps USB-A/USB-C PCIe Card -USB 3.1 Gen 2 PCI Express

At a Glance

    Rear View
    • 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
    • THE STARTECH.COM ADVANTAGE: StarTech.com offers a 2-year warranty & free lifetime 24 hour support on this dual port USB-A & USB-C PCI Express Host Controller card w/ full & low profile bracket incl.


    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 type.

    USB 3.1 Gen 2 Performance

    By adding 10Gbps USB ports to your computer, you can harness the speed of USB 3.1 Gen 2 and rest assured you're ready for both current and future high-bandwidth USB-A and USB-C devices.

    With higher data throughput support, this USB 3.1 PCIe card is a necessity for external drives, drive enclosures, and many other USB 3.1 peripherals. Plus, the expansion card with SATA power enables supplemental power to the USB ports (when motherboard power is insufficient) providing up to 5V 3A/15W via the USB-C port and 5V 0.9A/4.5W via the USB-A port. The card is ideal for use with high performance external storage solutions.

    Compatible with Older USB Devices

    Connecting older peripherals isn't a problem. This versatile dual-port USB 3.1 card is backward compatible with legacy USB 3.0/2.0 devices that use the common USB Type-A port, so you can eliminate the added expense and aggravation of purchasing new devices. You can also connect older devices on the USB Type-C™ port using a variety of USB-C cables and adapters.

    Easy Installation

    The USB 3.1 card is compatible with a broad range of Windows®, macOS and Linux® operating systems. Plus, the high-quality card includes both standard-profile and low-profile brackets, making it easy to install in full or small form-factor PCs and servers.

    Faster Transfer Speeds with UASP

    The card supports USB data transfer speeds of 10Gbps. But, you can experience transfer speeds up to 70% faster than conventional USB, when connected to a computer that also supports UASP. With UASP you can utilize the full potential of a SATA III SSD or HDD. UASP is supported in Windows® 8, macOS (10.8 or above), and Linux®.

    In testing, UASP performs with a 70% faster read speed and 40% faster write speed over traditional USB 3.1 Gen 2 at peak performance.

    At the same peak in testing, UASP also shows an 80% reduction in required processor resources.

    The PEXUSB311AC3 is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Environmental Certification




Package Contents

    • USB 3.1 Card
    • 1 x Low Profile Bracket
    • 1 x Quick Start Guide

Additional Product Images


Product Name2-Port 10Gbps USB-A/USB-C PCIe Card -USB 3.1 Gen 2 PCI Express
Manufacturer Part NumberPEXUSB311AC3
Product TypeUSB Adapter
Total Number of USB Ports2
Product ColorRed
Form FactorPlug-in Card
Host InterfacePCI Express x4
Environmentally FriendlyYes
UASP SupportYes
Number of USB 3.1 Ports2
Country of OriginTaiwan
Packaged Quantity1
Platform SupportedPC



Limited Warranty2 Year
Supplies/Accessories for StarTech.com PEXUSB311AC3

StarTech.com 1m 3ft USB C to Micro B Cable M/M / USB 3.1 (10 Gbps)

Mfg Part# USB31CUB1M

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