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Quick start guide

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: 06/14/2016

For the latest information, technical specifications, and support for 

this product, please visit www.startech.com/S251BU31C3CB.

Packaging contents

•  1 x 2.5 in. hard drive enclosure with integrated cable

•  2 x enclosure assembly screws

•  2 x drive-mount hardware screws

•  1 x screwdriver

•  1 x quick start guide

System requirements

•  An available USB port

•  A 2.5 in. hard drive or solid-state drive

The S251BU31C3CB is OS independent and doesn’t require any 

additional drivers or software.

Note:

 To obtain the maximum USB throughput, you must use a 

system with a USB 3.1 Gen 2 port.

System requirements are subject to change. For the latest 

requirements, please visit 

www.startech.com/S251BU31C3CB

.

S251BU31C3CB

USB 3.1 (10Gbps) 2.5” SATA SSD/HDD Enclosure with Integrated USB-C Cable

*actual product may vary from photos

Product diagram

LED indicator

LED indicator

Connectors

USB 3.1 cable

Install a drive in the enclosure

Warning! 

Drives should be handled carefully, especially when they’re 

transported. If you’re not careful with your drives, you may lose data 

as a result. Always handle storage devices with caution. Make sure 

that you’re properly grounded by wearing an anti-static strap when 

you install any computer component. If an anti-static strap isn’t 

available, touch a large grounded metal surface for several seconds 

to discharge any built-up static electricity.

1.  Pull out the integrated USB-C cable from around the enclosure.

2.  Pull out the drive tray.

3.  Gently slide the connectors on your drive into the corresponding 

connectors on the enclosure.

Note:

 The connectors on your drive are keyed so that the drive only 

fits in the enclosure one way.

4.  Turn over the drive tray and insert the drive-mount hardware 

screws into the two holes.

5.  Turn the screws clockwise to tighten them.

6.  Slide the drive tray back into the enclosure.

7.  To make sure that the drive tray stays in place, insert two of 

the enclosure screws in both sides of the enclosure in the end 

opposite to the USB-C cable.

8.  Turn the screws clockwise to tighten them.

Connect a drive to your computer

•  After you install a drive in the enclosure, connect the integrated 

USB-C cable to the USB Type-C port on your computer.

When you connect the enclosure to your computer and the OS 

automatically installs the necessary software, the drive is accessible 

as though it’s installed internally in the system. Before you use the 

drive, you need to prepare it for use and format it according to the 

requirements of your OS. For more information, see the 

Prepare a 

drive for use

 topic.

Note: 

The enclosure doesn’t require an external power supply, as it 

receives enough power through the USB bus that it’s connected to.

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