StarTech.com S251BRU31C3 User manual

Manual Revision: 11/07/2017
For the latest information, technical specications, and support for
this product, please visit www.StarTech.com/S251BRU31C3.
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
S251BRU31C3
2.5” USB-C External Hard Drive
Enclosure - Rugged - USB 3.1 (10Gbps)
*actual product may vary from photos

Instruction manual
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment o and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
Changes or modications not expressly approved by StarTech.com could void the user’s
authority to operate the equipment.
Industry Canada Statement
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [B] est conforme à la norme NMB-003 du Canada.
CAN ICES-3 (B)/NMB-3(B)
Use of Trademarks, Registered Trademarks, and other Protected Names and Symbols
This manual may make reference to trademarks, registered trademarks, and other
protected names and/or symbols of third-party companies not related in any way to
StarTech.com. Where they occur these references are for illustrative purposes only and do not
represent an endorsement of a product or service by StarTech.com, or an endorsement of the
product(s) to which this manual applies by the third-party company in question. Regardless
of any direct acknowledgement elsewhere in the body of this document, StarTech.com hereby
acknowledges that all trademarks, registered trademarks, service marks, and other protected
names and/or symbols contained in this manual and related documents are the property of
their respective holders.

Instruction manual
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Table of Contents
Product diagram ....................................................................................1
Package contents...................................................................................................................................... 2
Requirements ............................................................................................................................................. 2
About USB 3.1 Gen 2..............................................................................2
Install a drive...........................................................................................3
Connect the rugged enclosure ............................................................4
Prepare a drive for use ..........................................................................4
Windows OS................................................................................................................................................ 4
macOS........................................................................................................................................................... 5
Remove a hard drive..............................................................................6
Windows OS................................................................................................................................................ 6
macOS........................................................................................................................................................... 6
Technical support...................................................................................7
Warranty information............................................................................7

Instruction manual
1
Product diagram
USB Type-C™ port
Latch
SATA connectors
Protective sleeve
Latch
Protective casing

Instruction manual
2
Package contents
• 1 x drive enclosure
• 1 x USB-C™ to USB-C cable
• 1 x USB-C to USB-A cable
• 1 x foam drive pad
• 1 x hex key
• 1 x quick-start guide
Requirements
• Computer system with a USB port
• 2.5” SSD or HDD
The S251BRU31C3 is OS independent and doesn’t require any additional drivers or
software.
To obtain the maximum USB throughput, you must use a system with a USB 3.1 Gen 2
(10Gbps) port.
Requirements are subject to change. For the latest requirements, please visit
www.StarTech.com/S251BRU31C3.
About USB 3.1 Gen 2
USB 3.1 Gen 2 connectivity standard oers speeds up to 10Gbps. The S251BRU31C3 is
backwards compatible and supports USB 2.0 and USB 3.1 Gen 1 (5Gbps).

Instruction manual
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Install a drive
Warning! Drives should be handled carefully, especially when you transport them. If
you’re not careful with your drives, you may experience lost or corrupted data. 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. Remove the protective sleeve from the case by grasping a corner of the sleeve and
peeling it o of the protective casing.
2. Open the latch on the protective casing.
3. Use the provided hex key to remove the six screws from the protective casing.
4. Pull the two sections of the protective casing apart.
5. Gently slide your drive into the corresponding SATA drive connectors in one half of
the protective casing. The connector on your drive is keyed so that it only ts one
way.
6. If you are installing a 7 mm drive, place the foam drive pad between the end of the
drive and the protective casing.
7. Place the two sides of the protective casing together and close the latch.
8. Insert the six screws into the protective casing and use the hex key to tighten the
screws.
9. Replace the protective sleeve over the protective casing.

Instruction manual
4
Connect the rugged enclosure
The rugged enclosure comes with a USB-C to USB-C cable and a USB-C to USB-A cable.
When you connect the rugged enclosure, make sure that you use the cable that’s
appropriate for your computer.
1. Install a drive in the rugged enclosure. For more information about how to do this,
see the “Install a drive” topic.
2. Connect one of the provided USB cables to the USB Type-C port on the rugged
enclosure and to the USB port on your computer.
3. When you connect the rugged 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. For more information, see the “Prepare a drive for use” topic.
Note: The rugged enclosure doesn’t require an external power supply, as it receives
enough power through the USB bus that it’s connected to. When the computer is
turned o, the drive will stop working.
Prepare a drive for use
Windows OS
If you install a brand-new drive that doesn’t contain any data, you must prepare the
drive for use.
Warning! When you complete the following steps, all of the data on your drive will be
deleted. If your drive has data on it that you require, you should create a backup le or
use a dierent drive.
1. Depending on the OS version that you’re running, do one of the following:
• On your desktop, right-click My Computer and click Manage.
• On your desktop, right-click Computer and click Manage.
• Click the Start button or Windows icon. Enter compmgmt.msc and press
Enter.

Instruction manual
5
2. On the Computer Management screen, click Disk Management.
3. A dialog window appears and asks you to initialize the drive. Depending on the
version of Windows that you’re running, you have the option to create either an
MBR or a GPT disk.
Note: GPT (GUID partition) is required for drives larger than 2 TB, but GPT isn’t
compatible with some earlier versions of operating systems. MBR is supported by both
earlier and later versions of operating systems.
4. Locate the disk that is labeled Unallocated. To conrm that the drive is the correct
one, check the drive capacity.
5. Right-click the section of the window that says Unallocated and click New
Partition.
6. To initialize the drive in the format of your choice, complete the on-screen
instructions.
When the drive is successfully installed, it appears under My Computer or Computer
with a drive letter assigned to it.
macOS
If you install a brand-new drive that doesn’t contain any data, you must prepare the
drive for use.
Warning! When you complete the following steps, you create a partition that uses the
entire drive space.
1. Do one of the following:
• In Spotlight, enter Disk Utility.
• Open Finder. Navigate to Applications and click Utilities. Open Disk Utility.
2. Select the new drive and click the Partition tab.
3. Enter a name for the partition.
4. Click Apply.
The drive should now appear on your desktop and be accessible in Finder.

Instruction manual
6
Remove a hard drive
Caution! Do not remove the hard drive from the drive enclosure when a task is in
progress.
Windows OS
1. Click the Safely remove Hardware and Eject Media icon in the task bar.
2. Select the hard drive from the list of storage devices.
3. Wait for a message to appear telling you that it’s safe to remove the hard drive.
4. Disconnect the rugged enclosure from the computer.
5. Remove the drive from the rugged enclosure.
macOS
1. Close any open windows that list the contents of the hard drive.
2. On the desktop, drag the USB storage icon onto the trash can icon.
3. Wait 15 seconds.
4. Disconnect the rugged enclosure from the computer.
5. Remove the drive from the rugged enclosure.

Instruction manual
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Technical support
StarTech.com’s lifetime technical support is an integral part of our commitment to
provide industry-leading solutions. If you ever need help with your product, visit
www.startech.com/support and access our comprehensive selection of online tools,
documentation, and downloads.
For the latest drivers/software, please visit www.startech.com/downloads
Warranty information
This product is backed by a two-year warranty.
StarTech.com warrants its products against defects in materials and workmanship
for the periods noted, following the initial date of purchase. During this period,
the products may be returned for repair, or replacement with equivalent
products at our discretion. The warranty covers parts and labor costs only.
StarTech.com does not warrant its products from defects or damages arising from
misuse, abuse, alteration, or normal wear and tear.
Limitation of Liability
In no event shall the liability of StarTech.com Ltd. and StarTech.com USA LLP (or their
ocers, directors, employees or agents) for any damages (whether direct or indirect,
special, punitive, incidental, consequential, or otherwise), loss of prots, loss of business,
or any pecuniary loss, arising out of or related to the use of the product exceed the
actual price paid for the product. Some states do not allow the exclusion or limitation
of incidental or consequential damages. If such laws apply, the limitations or exclusions
contained in this statement may not apply to you.

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