StarTech PEXUSB312A1C1H 5-port USB PCIe card with USB-A, USB-C, and internal headers

StarTech PEXUSB312A1C1H 5-Port USB PCIe Card 10Gbps

Name: StarTech PEXUSB312A1C1H 5-Port USB PCIe Card 10Gbps
Brand: StarTech
SKU: PEXUSB312A1C1H
Price: 66.31 USD
Availability: InStock

StarTech|

MPN: PEXUSB312A1C1H

UPC: 065030888325

In Stock

$66.31$72.76

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Key Features

ASMedia 3142 USB controller
USB 3.1 Gen 2 10 Gbps signaling
PCI Express 3.0 x4 host interface
2 x USB-A external ports
1 x USB-C external port
Internal IDC header for 2 x USB 3.0 ports

Add fast, flexible USB expansion to a desktop or workstation that needs more than onboard I/O can provide. The StarTech PEXUSB312A1C1H installs in a PCIe 3.0 x4 slot and delivers a 10 Gbps hub with 2 external USB-A ports, 1 external USB-C port, and an internal IDC header for 2 additional 5 Gbps USB connections. Built around the ASMedia 3142 controller, this card is designed to maintain bandwidth when mixed-speed devices are connected at the same time. That matters in real deployments where SSDs, NVMe enclosures, capture devices, and peripherals all compete for bus time. Optional SATA power support also helps supply up to 15 W on USB-C and 4.5 W per USB-A port, giving attached devices the headroom they need for stable operation. For IT teams standardizing workstation expansion, this card offers a clean way to add modern USB-C connectivity without replacing the platform. It is a practical fit for systems that need reliable external storage access, faster peripheral transfers, and a compact low-profile installation path.

Ideal For

Upgrade a workstation for faster external SSD and NVMe enclosure access
Add USB-C and USB-A expansion to a desktop with limited rear I/O
Equip a lab PC for mixed-speed peripheral testing and device validation
Extend a production system with internal and external USB connectivity

Why This Product

1Adds both USB-A and USB-C connectivity in one card
2Supports internal USB headers for chassis integration
3Uses a dedicated controller to manage mixed-speed traffic
4Includes optional SATA power for higher device draw

Ports

External Ports	3 external ports
Internal Ports	2 internal USB ports

Power

Usb A Power Output	Up to 4.5 W per USB-A port
Usb C Power Output	Up to 15 W on USB-C
Optional Power Input	Optional SATA power

Design

Form Factor	PCIe expansion card
Bracket Support	Full-height and low-profile

Interface

Host Interface

PCI Express 3.0 x4

Controller

Chipset

ASMedia 3142

Performance

Usb Standard	USB 3.1 Gen 2
Data Transfer Rate	10 Gbps
Internal Usb Speed	5 Gbps

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Documentation

Manufacturer Brochure

User Manual

Frequently Asked Questions

What slot does this card require?▾

It installs in a PCIe 3.0 x4 slot.

How many external ports are available?▾

The card provides 3 external ports: 2 x USB-A and 1 x USB-C.

Does it support internal USB connections?▾

Yes. It includes an internal IDC header for 2 additional 5 Gbps USB connections.

Can it provide extra power to connected devices?▾

Yes. Optional SATA power support can deliver up to 15 W on USB-C and 4.5 W per USB-A port.