What is the maximum data transfer rate this card can provide?

The maximum data transfer rate this card can provide is up to 5.0 Gbps.

Is this card capable of powering high-powered USB devices?

Yes, the card can power high-powered USB devices as necessary with the optional SATA power connector.

How many USB ports does this card provide and are they all USB 3.0?

The card provides two USB ports, and both are USB 3.0.

Can this USB 3.0 Card Adapter be used with older versions of Windows?

Yes, this USB 3.0 Card Adapter supports older versions of Windows such as Windows XP, Vista, and 7.

Is there a driver for windows 10? In other words has anyone tested to work on windows 10?

The product specifications list the operating systems supported, which include Windows XP, Vista, 7, and various Windows Server versions. Windows 10 is not mentioned among the supported operating systems.

Will this card work on windows server 2012?

I'm using this in my Windows Home Server 2011 which is based off of Server 2008 R2 so I would assume it would work fine in 2012.

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StarTech.com 2 port PCI Express SuperSpeed USB 3.0 Card Model PEXUSB3S11

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Model: SATA - NEC 1 Ext / 1 Int

LP4 - NEC 2 Ext
SATA - Etron 2 Ext
SATA - NEC 2 Ext
SATA - NEC 1 Ext / 1 Int

Add one internal and one external SuperSpeed USB 3.0 ports to your PC
2-Port PCI Express SuperSpeed USB 3.0 Card with UASP Support
1 Internal 1 External
Dual Port PCIe USB 3.0 Adapter / PCI Express USB 3.0 Controller
USB 3.0 Card Adapter / USB 3.0 Adapter Card
USB 3 Card / USB 3.0 Controller Card
Versatile connection of internal or external peripherals 1 internal and 1 external port design
Power high-powered USB devices as necessary with the optional SATA power connector

Overview

Specs

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Add one internal and one external SuperSpeed USB 3.0 to your PC - 2 port PCI Exp

Model
Brand	StarTech.com
Model	PEXUSB3S11

Details
Type	PCI Express to USB Card
External USB Ports	1x USB Port
Internal USB Ports	1x USB Port
Standard	USB 3.0
Data Transfer Rate	Up to 5.0 Gbps
Operating Systems Supported	Windows XP(32/64bit)/Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2
Specifications	Note: The maximum throughput of this card is limited by the bus interface. If used with PCI Express Gen 1.0 enabled computers, the max throughput is 2.5 Gbps. If used with PCI Express Gen 2.0 enabled computers, the max throughput is 5 Gbps. Bus Type: PCI Express Card Type: Standard Profile (LP bracket incl.) Chipset ID: Renesas/NEC - µPD720200 Connector Type(s): PCI Express x1 Male External Ports: USB 3.0 A (9 pin ; SuperSpeed) Female Humidity: 0~85% RH Included in Package: Driver CD Instruction Manual Low profile bracket PCI Express USB 3.0 card Interface: USB 3.0 Internal Ports: SATA Power (15 pin) Plug USB 3.0 A (9 pin ; SuperSpeed) Female MTBF: 11,914 Hours OS Compatibility: Windows® 8 (32/64bit), 7 (32/34), Vista (32/64), XP (32/64) Windows Server® 2008 R2, 2003 Ports: 2 Product Height: 20 mm [0.8 in] Product Length: 70 mm [2.8 in] Product Weight: 40 g [1.4 oz] Product Width: 120 mm [4.7 in] Shipping (Package) Weight: 131 g [4.6 oz] Type and Rate: USB 3.0 - 5 Gbit/s UASP Support: Yes

Features
Features	Provides both internal and external USB 3.0 connections Features a SATA power connector to better match with newer systems equipped with more SATA than LP4 power connectors Fully compliant with USB 3.0 revision 1.0 specifications and Intel xHCI rev0.96 specifications PCI Express 2.0 Compliant Provides up to 900mA per USB port Supports USB transfer speeds of 5Gbps (Super Speed), 480Mbps (High Speed), 12Mbps (Full Speed), and 1.5Mbps (Low Speed) Backward compatible with previous USB standards Supports up to 127 USB devices connected to a single interface. (Requires additional USB hubs to obtain this number) USB ports are Hot Swapping and Plug-and-Play compliant Supports PCI Bus Power Management Interface Specification revision 1.2 Fully supports the following USB Communication Types: Control/Bulk/Interrupt/Isochronous Transfer

Dimensions & Weight
Weight	0.25

Additional Information
First Listed on Newegg	September 17, 2025

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Item#: 9SIA1K6KKC0207

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StarTech.com 2 port PCI Express SuperSpeed USB 3.0 Card Model PEXUSB3S11

Learn more about the STARTECH PEXUSB3S11

Customer Reviews of the STARTECH PEXUSB3S11

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info