User Manual

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Quick-Start Guide

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Manual Revision: May 14, 2020 1:26 PM

Product Diagram (PEXUSB312A3)

Component Function

1 USB-A Ports

• Used to connect a USB Peripheral Device to

the USB Card.

2 Bracket Screws

• Used to Secure the Low Prole or Full Prole

Bracket to the USB Card.

3 PCI Express Connector

• Used to connect the USB Card to the PCI

Express Slot on the Host Computer.

4 SATA Power Connector

• (Optional) Connect a 15 Pin SATA Power

Connector to provide extra power to the USB

Type-A Ports.

Requirements

For the latest requirements, please visit www.startech.com/PEXUSB312A3

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

• (Optional) SATA Power Source

Tools

• Small Phillips® Head Screwdriver

2-Port USB 3.1 Card | 10Gbps per port | 2x USB-A | PCIe

Hardware Installation

Installing the Low Prole Bracket

By default the Full Prole Bracket is attached to the USB Card. Depending on your

system conguration you may need to remove the Full Prole Bracket and replace it

with the Low Prole Bracket (included).

1. Using a Small Phillips Head Screwdriver (sold separately), remove the two Bracket

Screws securing the Full Prole Bracket to the USB Card.

2. Align the Screw Holes on the USB Card with the Screw Holes on the Low Prole

Bracket. Making sure the USB Card is sitting on top of the Screw Holes on the Low

Prole Bracket.

3. Insert the Bracket Screws through the USB Card and into the Screw Holes on the

Low Prole Bracket.

4. Using the Small Phillips Head Screwdriver, tighten the Bracket Screws, being

careful not to over-tighten.

Installing the USB Card

Warning: USB cards can be damaged by static electricity. Make sure that you are

properly grounded before you open the computer case or touch the USB Card. You

should wear an anti-static strap when you install any computer components. If an

anti-static strap is not available, discharge any built-up static electricity by touching

a large grounded metal surface for several seconds. Only handle the USB Card by its

edges and do not touch the gold connectors.

1. Turn o the Host Computer and disconnect any Peripheral Devices that are

connected (e.g. printer, external hard drives, etc.).

2. Unplug the Power Cable from the back of the Host Computer.

3. Remove the Cover from the Host Computer’s Case.

Note: Consult the documentation that came with the Host Computer for details

about how to remove the Cover safely.

4. Locate an open PCI Express Slot (x4, x8, or x16) and remove the corresponding

Metal Cover Plate from the back of the Host Computer’s Case.

5. Gently insert the USB Card into the open PCI Express Slot and fasten the Bracket

to the back of the Host Computer’s Case.

6. (Optional) Connect a 15 Pin SATA Power Connector from the Power Supply to the

SATA Power Connector on the USB Card.

Summary of content (2 pages)

PAGE 1
Quick-Start Guide 2-Port USB 3.1 Card | 10Gbps per port | 2x USB-A | PCIe Product Diagram (PEXUSB312A3) Hardware Installation Installing the Low Profile Bracket 1 By default the Full Profile Bracket is attached to the USB Card. Depending on your system configuration you may need to remove the Full Profile Bracket and replace it with the Low Profile Bracket (included). 1.
PAGE 2
Note: Connecting a separate Power Supply to the USB Card will provide extra power to the USB-A Ports for charging connected Devices. 5. On the How do you want to search for drivers screen, select the Browse my computer for driver software link. 7. Place the Cover back onto the Host Computer’s Case. 6. Click on the Let me pick from a list of available drivers on my computer link. 8. Reconnect the Power Cable to the back of the Host Computer. 7. Select, USB xHCI Compliant Host Controller. 9.