StarTech.com

Dual-Bay 2.5in Hard Drive Enclosure - USB 3.0 to SATA III 6Gbps with RAID

One high performance storage solution to support two SSD or HDD drives

Product ID: S252BU33R

  • Create a powerful external USB 3.0 storage solution, supporting two 2.5" SSD or HDD drives
  • Sleek, compact design works beautifully with your Mac or PC
  • Transfer files quickly with SATA III (6Gbps) power and USB 3.0 with UASP
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  • Achieve enhanced performance and data redundancy with RAID 0,1, spanning and JBOD
  • Requires only 5V power, allowing flexible power options
  • Works with Windows, Mac, Chrome and Linux (2.4.x and up) systems
  • Easy set-up with no additional drivers and software required
£89.99 GBP exc VAT
£107.99 GBP inc VAT
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Technical Specifications

Warranty Information
Warranty 2 Years
Hardware
Bus Type USB 3.0
Chipset ID JMicron - JMS561
Compatible Drive Types SATA
Drive Installation Fixed
Drive Size 2.5in
Fan Bearing Type Ball Bearing
Fan(s) Yes
Fans 1 - 40 mm
Interface USB 3.0
Number of 2.5 inch bays 2
Number of Drives 2
Supported Drive Height(s) 5mm
7mm
9.5mm
12.5mm
15mm
Performance
4Kn Support Yes
Hot Swap Capability Yes
Max Drive Capacity Currently tested with up to 2TB 7200 RPM hard drives (4 TB total)
Maximum Data Transfer Rate USB 3.0 - 5 Gbps
Noise Level 21 dBA
RAID Yes
Supported RAID Modes RAID 0 (Striped Disks)
RAID 1 (Mirrored Disks)
JBOD - (Just a Bunch of Disks)
BIG (Spanning or Concatenation)
Type and Rate USB 3.0 - 5 Gbit/s
SATA III (6 Gbps)
UASP Support Yes
Connector(s)
Drive Connectors 1 - SATA Data & Power Combo (7+15 pin) Receptacle
Host Connectors 1 - USB Type-B (9 pin) USB 3.0 Female
Software
OS Compatibility OS independent; No software or drivers required
Indicators
LED Indicators 1 - Power LED
1 - HHD 1 Activity LED
1 - HHD 2 Activity LED
Power
Input Current 0.4 A
Input Voltage 100 ~ 240 AC
Output Current 2 A
Output Voltage 5 DC
Plug Type H
Power Consumption (In Watts) 3
Power Source AC Adapter Included
Environmental
Humidity 10~90% RH
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -10°C to 65°C (14deg;F to 149°F)
Physical Characteristics
Color Black
Enclosure Type Aluminum and Plastic
Max Drive Height 15 mm [0.6 in]
Product Height 90 mm [3.5 in]
Product Length 132 mm [5.2 in]
Product Weight 350 g [12.4 oz]
Product Width 50 mm [2 in]
Packaging Information
Shipping (Package) Weight 730 g [25.8 oz]
What's in the Box
Included in Package 1 - USB 3.0 Dual 2.5” SATA HDD/SSD RAID Enclosure
1 - USB 3.0 cable
1 - USB to Power Cable (Type H Barrel)
1 - Universal Power Adapter (NA/EU/UK/AU)
1 - Installation screw kit
1 - Quick install guide
Supports any operating system.
No additional drivers or software required.

Certifications

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Accessories

Dual-Bay 2.5in Hard Drive Enclosure - USB 3.0 to SATA III 6Gbps with RAID

Customer Reviews

3.6 (5 reviews)
3.6 out of 5 stars
Quality of Product
1
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1 - 5 of 5 Reviews

(5 stars) Works great

By:
Have owned this device for several years, and it just works. I'm extremely happy with this product.
Comment Helpful? Yes - 0 No - 0 Report

(1 star) Painfully slow with RAID 0

By:
Bought this enclosure to use as a RAID 0 large storage option. Unfortunately it is slower than the base drives by an order of magnitude (14-16MB per second throughput). do not purchase it if you are going to use it for RAID 0.
Comment Helpful? Yes - 1 No - 0 Report
Response from StarTech.com:
Sam, Customer Support
Thank you for your feedback on S252BU33ER. We're sorry for the slow speeds you're seeing and would like to help. There are some factors that could affect how fast your transfers go including how the data is being written on the drives, other operations going on your computer, the speed of the USB port the enclosure is connected to, and others. This, however, may not account for the speeds you're seeing. We recommend contacting us directly so that we can find out the problem and get your setup working as intended as quickly as possible. You can reach our Technical Advisors 24 hours a day, 5 days a week, at 1-800 265-1844 or www.startech.com/chat.

(4 stars) Great Enclosure

By:
I use it with MacOS 10.13.4 in RAID mode for TimeMachine Backup. Works great. Unfortunately no firmware updater for MacOS X available :-(
Comment Helpful? Yes - 0 No - 0 Report

(3 stars) Great Drive But Doesn't Work with 5TB 2.5" Drives

By:
I bought this last week. It's a nice case - compact, light, bus-powered, USB 3.0, takes 15mm 2.5" drives - exactly what I was wanting. Alas, it does not work with 5TB Seagate Barracuda 2.5" drives - and this was not obvious on the Amazon product page. I realise now that it has only been tested with 2TB drives. Gutted! Will there be a firmware update for it that will allow it to use 5TB drives?? I hope so!
Comment Helpful? Yes - 0 No - 0 Report
Response from StarTech.com:
Sam, Customer Support
Thank you for your review of S252BU33R. Although it has only been tested with drives up to 2TB, we don't expect any issues using this enclosure with larger drives. We recommend contacting us directly so that we can find out the problem and get your setup working as quickly as possible. You can reach our Technical Advisors 24 hours a day, 5 days a week, at 1-800 265-1844 or www.startech.com/chat.

(5 stars)

By:
A really nice compact and very reserved design. This is the only drive enclosure I could find that fit 2.5" HDDs and SSDs, with SATA 3 and USB3. Very please with this, coupled with two WD red dives it very fast and runs very cool. The only improvement I would make would be to add a quick release/open latch rather than screw entry.
Quality of Product (5/5)
Comment Helpful? Yes - 1 No - 0 Report