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Green circuit board with silver bracket, two rectangular USB-A ports, one oval USB-C port, and a row of internal pin headers

STARTECH

STARTECH PEXUSB312A1C1H 5-Port USB 3.2 10Gbps PCIe expansion card

SKU CH-49HD-2KM3P MPN PEXUSB312A1C1H

Adds two USB-A and one USB-C port at 10 Gbps plus an internal header for two 5 Gbps ports, with optional SATA power for 15 W USB-C and 4.5 W USB-A output

  • External USB ports2 x USB 3.2 Gen 2 × 1 USB Type-A (9 pin, 10 Gbit/s) 1 x USB
  • Internal ports1 x IDC (20 pin, USB 3.0, Motherboard Header) 1 x SATA Power
  • Supported standardsIndustry Standards: PCI Express Base Specification Rev. 3.0
  • Supported operating systemsWindows 7, 8, 8.1, 10 Windows Server 2008 R2, 2012 R2, 2016,
  • Product typeUSB 3.2 (10 Gbit/s) PCIe Card
  • Compatible withWindows 7, 8, 8.1, 10 Windows Server 2008 R2, 2012 R2, 2016,
  • Five ports deliver 10 Gbps throughput for fast external storage
  • USB Type-C port supplies up to 15 W for power-hungry devices
  • Internal IDC header adds two 5 Gbps connections to front-panel ports
  • Works with Windows, macOS and Linux without extra drivers
  • Low-profile bracket included for small-form-factor builds

Five-port USB 3.2 10 Gbps PCIe card

This StarTech.com expansion card adds three external ports and one internal header to a desktop computer. It uses the ASMedia 3142 controller and connects through a PCI Express 3.0 slot. The bracket fits both full-profile and low-profile chassis.

Suits builders adding mixed USB-A and USB-C ports

The card provides two USB-A ports and one USB-C port at the rear, plus a 20-pin IDC header for two internal 5 Gbps ports. A SATA power connector enables 15 W on the USB-C port and 4.5 W on each USB-A and internal port. UASP support is included for faster storage transfers. Buyers who need more than five ports or require USB 3.2 20 Gbps speeds cannot use this card.

PCI Express 3.0 x4 slot required

Installation needs an available PCI Express 3.0 slot with at least four lanes. The card supports Windows 7 through 10, Windows Server 2008 R2 through 2019, Linux kernels 3.5 to 4.11.x LTS and macOS 10.13 through 11.0.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $63.99
Pricier than about 77% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameStarTech.com
Model namePEXUSB312A1C1H
Product typeUSB 3.2 (10 Gbit/s) PCIe Card
Connectivity
Supported standardsIndustry Standards:
PCI Express Base Specification Rev. 3.0
USB 3.2 Specifications
UASP (USB Attached SCSI Protocol) Rev. 1.0
Ports & slots
External USB ports2 x USB 3.2 Gen 2 × 1 USB Type-A (9 pin, 10 Gbit/s)
1 x USB 3.2 Gen 2 × 1 USB Type-C (24 pin, 10 Gbit/s)
Internal ports1 x IDC (20 pin, USB 3.0, Motherboard Header)
1 x SATA Power (15 pin)
Size & build
Product dimensions0.6 in × 4 in × 2.7 in
Product weight0.13 lb (0.06 kg)
Shipping weight0.13 kg
Package size170 × 142 × 30 mm
Compatibility
Supported operating systemsWindows 7, 8, 8.1, 10
Windows Server 2008 R2, 2012 R2, 2016, 2019
Linux 3.5 to 4.11.x LTS version only
macOS Catalina (10.15)
macOS Mojave (10.14)
macOS High Sierra (10.13) macOS Big Sur (11.0)
Compatible withWindows 7, 8, 8.1, 10
Windows Server 2008 R2, 2012 R2, 2016, 2019
Linux 3.5 to 4.11.x LTS version only
macOS Catalina (10.15)
macOS Mojave (10.14)
macOS High Sierra (10.13) macOS Big Sur (11.0)
In the box
In the boxUSB 3.2 (10 Gbit/s) PCIe Card
Full-Profile Bracket (Installed)
Low-Profile Bracket
Quick-Start Guide

Questions about this item

Should I pick the model with the internal IDC header or one without it?

This card includes a 20-pin IDC header that adds two internal USB 3.0 ports running at 5 Gbps each, so choose it if you need front-panel USB ports; otherwise a version without the header saves the internal connector.

What does the 10 Gbps rating deliver when I plug in a fast external SSD?

The 10 Gbps USB 3.2 Gen 2 lanes give up to 10 Gbit/s per port; with UASP the card sustains near that throughput for NVMe drives, so large sequential transfers hit the rated ceiling.

How does the PCIe 3.0 x4 slot affect the 10 Gbps USB ports?

The card uses a PCI Express 3.0 x4 connection, providing enough upstream bandwidth to run all three external ports at their full 10 Gbps simultaneously without bottlenecking.

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