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Instruction manual

FR:

 Guide de l’utilisateur - fr.startech.com

DE:

 Bedienungsanleitung - de.startech.com

ES:

 Guía del usuario - es.startech.com

NL:

 Gebruiksaanwijzing - nl.startech.com

PT:

 Guia do usuário - pt.startech.com

IT:

 Guida per l’uso - it.startech.com

Manual Revision: 10/02/2015

For the latest information, technical specifications, and support for 

this product, please visit www.startech.com/PEXUSB311EI

Packaging contents

•  1x 2-port USB 3.1 (10Gbps) card - 1 ext, 1 int

•  1x low-profile bracket

•  1x instruction manual

System requirements

•  Computer with an available PCI Express slot (x4, x8, x16)

•  15-pin SATA power connector (optional, but recommended)

•  Any of the following operating systems:

 

- Windows® 10 (32-bit or 64-bit)

 

- Windows 8 / 8.1 (32-bit or 64-bit)

 

- Windows 7 (32-bit or 64-bit)

 

- Windows Server® 2012, 2008 R2

 

- Mac OS® 10.9 and later (tested up to 10.10)

 

- Linux® 3.5

Operating system requirements are subject to change. For the latest 

requirements, please visit www.startech.com/PEXUSB311EI.

Product diagram

PEXUSB311EI

2-Port USB 3.1 (10Gbps) Card - USB-A, 1x External, 1x Internal - PCIe

USB 3.1 port

(external, USB-A)

USB 3.1 port

(internal, USB-A)

PCIe x4

connector

SATA power

connector

About USB 3.0, USB 3.1 Gen 1, and USB 

3.1 Gen 2

USB 3.0 is also known as USB 3.1 Gen 1. This connectivity standard 

offers speeds up to 5Gbps. 

USB 3.1 Gen 2 offers speeds up to 10Gbps. The PEXUSB311EI is a USB 

3.1 (10Gbps) Gen 2 card.  

Installation

Install the USB 3.1 card

WARNING!

PCI Express cards can be severely damaged by static electricity. Make 

sure that you’re properly grounded before you open your computer 

case or touch your PCI Express card. You should wear an anti-static 

strap when you install any computer component. If an anti-static 

strap isn’t available, discharge any built-up static electricity by 

touching a large grounded metal surface for several seconds. Only 

handle the PCI Express card by its edges and don’t touch the gold 

connectors.

1.  Turn off your computer and any devices or peripherals that are 

connected to it (for example, printers, external hard drives, and so 

on).

2.  Unplug the power cable from the back of your computer.

3.  Disconnect any peripheral devices that are connected to your 

computer.

4.  Remove the cover from your computer case. Consult the 

documentation that came with your computer for details about 

how to do this safely.

5.  Locate an open PCI Express x4 slot (or higher) and remove the 

corresponding metal cover plate from the back of your computer 

case. Consult the documentation that came with your computer 

for details about how to do this safely. This card works in PCI 

Express x4, x8, or x16 slots.

6.  Gently insert the card into the open PCI Express slot and fasten 

the bracket to the back of the case.

Note: 

If you install the card into a small form-factor or a low-profile 

desktop computer, it may be necessary to replace the pre-installed 

standard-profile bracket with the included low-profile (half-height) 

installation bracket.

7.  (Optional): Connect a 15-pin SATA power connector from your 

computer’s power supply to the card’s SATA power connector.

Note: 

It is recommended that you connect SATA power to ensure 

sufficient power is provided to the card as well as to each USB 3.1 

port. 

8.  Place the cover back onto your computer case.

9.  Reconnect the power cable to the back of your computer.

10. Reconnect all of the peripheral devices that you disconnected in 

step 3.

11. Turn on your computer.

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