Drive Enclosure for 2.5" SATA SSDs/HDDs - USB 3.1 (10Gbps) - USB-A, USB-C

Access data stored on your 2.5” SATA SSD/HDD, with support for high-capacity drives up to 15mm

Product ID: S251BU31315

5 stars (2 reviews) |
  • Turn a 2.5” drive into fast USB 3.1 external storage for your USB-C enabled tablet or laptop
  • Supports 5 mm - 15 mm drive height
  • Backward compatible, for use with your older USB 3.0 and 2.0 devices
Your price
£35.99 GBP excl. VAT
£43.19 GBP incl. VAT

In stock: 428

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Where to buy

This USB 3.1 Gen 2 single-drive enclosure gives you an ultra-fast, portable external storage solution for 2.5” hard drives or solid-state drives up to 15 mm in height. The enclosure provides quick access to your data wherever you go and it lets you retain your data after an upgrade to a new SSD or HDD in your computer.

Ultra-fast performance

The drive enclosure lets you leverage the high performance of the latest SSDs and HDDs. USB 3.1 Gen 2 also gives you greater bandwidth and speeds up to 10Gbps for ultra-fast access to your data. IT professionals, medical personnel, researchers, creative professionals and anyone else who needs easy access to their data on the go will benefit from this portable drive enclosure. The enclosure lets you quickly access your data, to browse your files and edit your documents.

The enclosure also provides you with easy drive access for data migration, drive cloning, and data backups so that you can safeguard your data at all times.

Versatile and compatible

Unlike most drive enclosures, which only support SATA SSDs and HDDs up to 9.5 mm in height, this enclosure is compatible with virtually all 2.5" SATA drives up to 15 mm in height. Plus, it comes with a USB Type-C to Micro-B cable, for connecting to newer USB-C enabled laptops, tablets, and phones. A USB Type-A to Micro-B cable is also included to ensure backward compatibility with your existing USB 3.0 and 2.0 devices.

The enclosure is powered directly from the USB port on your device, which means no external power is required. For portable storage, you can tuck it away inside your laptop bag or carrying case and take it anywhere -- from your home to the office, the hospital, the lab, or out in the field, so that you can access your data wherever you go.

Protection for your data

The enclosure is engineered with a sleek and durable aluminum housing to help keep your data safe and secure wherever you go. Its aluminum housing and venting help to dissipate heat and passively cool the drive in order to help prevent drive failure and data loss.

The S251BU31315 is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Applications

  • Add portable external data storage to your USB-C or USB-A laptop or tablet using a 2.5 in. solid-state drive or hard drive that ranges from 5 mm to 15 mm in height
  • Use your SATA SSDs/HDDs at maximum speed, by taking advantage of ultra-fast USB 3.1 Gen 2 (10Gbps) connectivity
  • Back up your important data to an external storage device

Partner Numbers

  • Exertis 0010103322
  • Ingram Micro UK V933860
  • CMS Distribution V209454
  • UPC 065030866040

Compatibility

  • OS Independent logo
OS independent; No software or drivers required

Specifications

Warranty Information Warranty 2 Years
Connector(s) 1 - Drive Connectors SATA Data & Power Combo (7+15 pin)
1 - Host Connectors USB 3.1 USB Type Micro-B (10 pin, Gen 2, 10 Gbps)
Environmental Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -10°C to 65°C (14°F to 149°F)
Humidity Operation Humidity: 10% ~ 90% RH
Storage Humidity: 5% ~ 95% RH
Hardware Interface USB 3.1 Gen 2
Bus Type USB 3.1 Gen 2
Number of Drives 1
Drive Size 2.5in
Compatible Drive Types SATA
Fan(s) No
Chipset ID ASMedia - ASM1351
Indicators 1 - LED Indicators Power & Activity
Packaging Information Package Height 41 mm [1.6 in]
Package Length 17.8 cm [7.0 in]
Shipping (Package) Weight 250 g [8.8 oz]
Package Width 13.3 cm [5.2 in]
Performance Maximum Data Transfer Rate 10 Gbps
Type and Rate USB 3.1 Gen 2 - 10 Gbit/s
UASP Support Yes
4Kn Support Yes
TRIM Support Yes
Max Drive Capacity Currently tested with hard drives up to 2TB at 7200 RPM
Physical Characteristics Color Black
Material Aluminum
Max Drive Height 15 mm [0.6 in]
Product Length 12 cm [4.7 in]
Product Width 75 mm [3.0 in]
Product Height 21.5 mm [0.8 in]
Weight of Product 105 g [3.7 oz]
Power Power Source USB-Powered
Software OS Compatibility OS independent; No software or drivers required
Special Notes / Requirements Note Windows 7 and earlier Windows versions do not support TRIM with USB to SATA devices.
What's in the Box 1 - Included in Package drive enclosure
USB-C to Micro-B cable
USB-A to Micro-B cable
screwdriver
5 - Included in Package drive-mount screws
3 - Included in Package enclosure screws
1 - Included in Package quick-start guide

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Frequently Asked Questions

Troubleshooting

When you troubleshoot issues with a hard drive enclosure, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Cables
  • Hard drives
  • Hard drive enclosure

To test your setup components, try the following:

  • Use the cables, hard drives, and hard drive enclosure in another setup to see if the problem is with the components or the setup.
  • Use a different cable, hard drive, and hard drive enclosure in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test the hard drive and hard drive enclosure, it is recommended that you do the following:

  • To check Disk Management, press the Windows key + R, type diskmgmt.msc, and press Enter. Check to see if your hard drive is listed.
  • If the hard drive is listed with unallocated space, the hard drive needs to be reformatted. Right-click unallocated and click New Simple Volume. Follow the on-screen instructions to complete the reformatting.​

Note: Formatting a hard drive erases all of the data on it. Make sure that you back up all of your data before you reformat the hard drive.​

  • If the hard drive is listed as healthy but does not have a drive letter, for example, C:, right-click healthy and click Change Drive Letter and Paths. Click Add, assign a drive letter, and click OK.

Note: A formatted hard drive will not show up in Computer or My Computer until it has a drive letter assigned to it.

You should not upgrade your device's firmware if you do not have any issues with the functionality of your device. The only time you should consider an upgrade is if you are experiencing a problem with the device, and you have confirmed that the firmware addresses this problem.  You can confirm this is the case by reviewing the documentation included with the firmware or by consulting with our Technical Support team. Incorrectly upgrading firmware can result in diminished performance so it is best to contact StarTech.com if you would like to perform this operation.

Before You Buy

Yes, this device supports the TRIM command. If the OS issues a TRIM command, the command will be passed to the connected device.

To determine if your hard drive will work in this enclosure, on the product page, click the Technical Specifications tab, and do the following:

  • Make sure that the enclosure supports the storage size of your hard drive. If the storage size of your hard drive is larger than what the enclosure was tested with, the hard drive will likely still work with the enclosure.
  • Confirm that your hard drive uses the same interface type as the enclosure. For example, IDE, SATA, or M.2.
  • Make sure that the enclosure supports the physical size of your hard drive, such as 2.5 inches or 3.5 inches.
  • Make sure that the enclosure supports the height of your hard drive. For example, 9 mm or 15 mm.
  • Verify that the power consumption of your hard drive doesn’t exceed the power output of the enclosure. If you’re using multiple hard drives, make sure that the combined power consumption of all of the hard drives doesn’t exceed the power output of the enclosure.

Hard Drives

Windows 10 

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, ex-FAT, NTFS, and so on).

Initialize a drive

Note: You typically only need to initialize a drive if the drive is new. If you cannot find an uninitialized drive in Disk Management, skip the following steps and try to partition your device.

  1. Press the Windows key + R, type compmgmt.msc, and click Run to open Computer Management.

  2. Navigate to Disk Management.

  3. When prompted to, initialize your disk(s). If you are running Windows® 7 or later and are using a drive larger than 2TB, initialize the disk(s) with GPT. If you are running an earlier version of Windows, initialize the disk(s) with MBR. For more information, visit the following FAQ: https://www.startech.com/support/faqs/technical-support?topic=hard-drives#mbr-vs-gpt.

  4. Click OK.

Create a partition in a drive

Note: The following steps create an NTFS partition that uses the entire drive space. To use a different file system, select a different option in step 6.

  1. Right-click Unallocated or RAW volume, and select New Simple Volume.

  2. In the New Partition Wizard, click Next.

  3. Select Primary partition.

  4. Leave the partition size set to default, and click Next.

  5. Assign a drive letter or leave it set to the default, and click Next.

  6. Enter the following settings to format the partition:

  • In the File System field, enter NTFS.
  • Set the Allocation unit size to Default.
  • In the Volume label field, enter <your name/reference>.
  • Select the Perform a quick format check box.
  • Clear the Enable file and folder compression check box.
  1. Click Next > Finish.

The new drive should appear in Windows Explorer.

Mac OS

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, HFS+, ex-FAT, NTFS, and so on).

Initialize a drive

Mac OSX detects a drive that needs to be initialized and automatically prompts you to initialize the drive. If you are prompted to initialize the drive, click Initialize. If you are not prompted to initialize the drive and you cannot find the drive in Finder, you will need to create a partition on the drive.

Create a partition on a drive

Note: The following steps create an HFS+ (Mac OS Extended (Journaled)) partition that uses the entire drive space.

To create a partition on a new drive, complete the following:

  1. Open Finder.

  2. Navigate to Applications and click Utilities.

  3. Open Disk Utility.

  4. Select the new drive and click the Partition tab.

  5. Click Options and verify that it is set to GUID Partition Table.

  6. Enter a name for the partition.

  7. Click Partition.

The drive should now be accessible in Finder.

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Compliance and safety

Compliance letters

  • RoHS
    • Language: English
  • WEEE
    • Language: English

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

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(5 Stars)

Great enclosure

By: Jesse K - 03/17/2017
I bought this last week from Amazon, for a 15mm drive where the enclosure failed. I've purchased StarTech cables & adapters before, but this is the first one that motivated me to leave a review. It's solidly-built and lightning-fast on USB 3.1, I'm getting ~500MBp/s on a Seagate Freeplay. Decent enclosures of this size are tough to find, so just get this one :)
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(5 Stars)

Works great

By: xapim - 11/19/2018
Supports 5tb 2.5" hdd (the largest 2.5" hdd on the market) 2 partitions in MBR (due to mbr restrictions mbr doesn't support one single 5tb partition it will always force 2 patitions in large drives) or one single partition in GPT
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