Does this card support USB Power Delivery for charging?

The card's USB-C ports do not support USB Power Delivery.

What type of devices can I connect using this card?

The card's USB-C ports are standard data throughput ports, allowing you to connect USB 3.1 Gen 2 devices for data transfer at speeds up to 10Gbps.

What is the maximum data transfer speed for this card?

The maximum data transfer speed for this card is up to 10Gbps.

Is this card compatible with my operating system?

This card supports a range of operating systems, including Windows 7, 8, 8.1, 10, Windows Server 2008 R2, 2012, 2016, 2019, Linux (3.5 to 4.11.x LTS versions), and macOS Catalina (10.15), Mojave (10.14), and High Sierra (10.13).

Does this card support UASP (USB Attached SCSI Protocol)?

Yes, this card supports UASP (USB Attached SCSI Protocol).

Can this card be plugged into any motherboard PCIe slot and be ready to go? Or is there much compatibility/configuration issues to deal with?

The card is compatible with PCI Express enabled computers or servers with a PCI Express x4 slot or higher (x8, x16).

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StarTech.com PEXUSB312C3 2-Port PCIe USB 3.1 Card - 2 x USB-C - USB 3.1 Gen 2 - Up to 10Gbps

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PCI Express to USB Card
USB 3.1 Gen 2
up to 10 Gbit/s Data Transfer Rate

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Best Seller Ranking	#25 in Add-On Cards

Model
Brand	StarTech.com
Model	PEXUSB312C3

Details
Type	PCI Express to USB Card
External USB Ports	2 x USB Type-C (24 pin) USB 3.1 (10Gbps) Female
Internal Ports	1 x SATA Power (15 pin) Plug
Standard	USB 3.1 Gen 2
Data Transfer Rate	up to 10 Gbit/s
Operating Systems Supported	Windows 7, 8, 8.1, 10 Windows Server 2008 R2, 2012, 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)
Compatibility	PCI Express enabled computer or server with a PCI Express x4 slot or higher (x8, x16)
Specifications	Connector Type(s): 1 - PCI Express x4 Male Bus Type: PCI Express Card Type: Standard Profile (LP bracket incl.) Chipset ID: ASMedia - ASM3142 Industry Standards: USB 3.2 Specification Rev. 2.0 USB Specification Rev. 2.0 PCI Express Base Specification Rev. 3.0 Intel xHCI Specification Rev. 1.1 UASP (USB Attached SCSI Protocol) Rev. 1.0 Interface: USB 3.1 Gen 2 Port Style: Integrated on Card Ports: 2 Maximum Data Transfer Rate: 10Gbps UASP Support: Yes Note: The card's USB-C ports are standard data throughput port. They do not support DP Alt Mode or USB Power Delivery. The maximum throughput of this card is limited by the bus interface. PCI Express Gen 1.0 max throughput is 2.5Gbps. PCI Express Gen 2.0 max throughput is 5Gbps. PCI Express Gen 3.0 max throughput is 10Gbps.

Features
Features	Transfer files and access USB 3.1 Gen 2 devices faster, with up to 10Gbps of throughput Optional SATA power connector for high power devices Fits into standard or low-profile systems with a dual-profile design Compliant with Universal Serial Bus 3.1 Gen 2 Specification Compliant with UASP (USB Attached SCSI Protocol) Revision 1.0

Dimensions & Weight
Dimensions	0.70" x 4.80" x 3.10"
Weight	0.10 lbs.

Packaging
Package Contents	1 x USB 3.1 Card 1 x Low Profile Bracket 1 x Quick Start Guide

Additional Information
First Listed on Newegg	January 19, 2026

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StarTech.com PEXUSB312C3 2-Port PCIe USB 3.1 Card - 2 x USB-C - USB 3.1 Gen 2 - Up to 10Gbps

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Item#: 9SIBSWCKS04267

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StarTech.com PEXUSB312C3 2-Port PCIe USB 3.1 Card - 2 x USB-C - USB 3.1 Gen 2 - Up to 10Gbps

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Customer Reviews of the STARTECH PEXUSB312C3

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Manufacturer Contact Info