USB 3.0/eSATA Dual 3.5" SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – Black
Create an external dual 3.5in HDD SATA RAID array, connected through either USB 3.0 with UASP or eSATA
UASP Support (Attached SCSI Protocol Specification Revision 1.0)
eSATA or USB Host Connection
Compatible with SATA revision I/II/III (1.5/3.0/6.0 Gbps)
Dual Drive Bay
The S3520BU33ER 2-Bay RAID Enclosure offers a high-performance external storage solution, enabling you to build a secure RAID array with two 3.5" SATA hard drives, with the option to connect it to your computer through either an available USB 3.0 or eSATA port.
For fast data transfers and efficient performance from your SATA III drives, the RAID enclosure supports full SATA III transfer speeds (up to 6 Gbps), as well as full USB 3.0 transfer speeds (up to 5Gbps). When connected through USB, the enclosure supports UASP, which offers performance up to 70% faster than conventional USB 3.0 when paired with a UASP-enabled host controller (see our performance below).
With support for JBOD, Spanning, RAID 0, and RAID 1,the enclosure offers several options that enable you to customize your drive arrangement based on your storage requirements.
To maximize both durability and reliability, the external RAID enclosure features high-quality aluminum construction with a built-in fan that helps improve ventilation and maintain a better operating environment for your drives.
The HDD enclosure offers a versatile solution for increasing the storage/backup capabilities of your computer, with support for large capacity hard drives (tested up to 4TB).
To ensure compatibility with your computer system, the S3520BU33ER supports all of the leading operating systems, including: Microsoft Windows® (8/7/Vista/XP/Server 2008/Server 2003), Apple® OSX (10.9/10.8/10.7/10.6), Linux, and Google Chrome OS™.
It is backed by a StarTech.com 2-year warranty and free lifetime technical support.
Improved Performance with UASP
UASP is supported in Windows 8, Mac OSX (10.8 or above), and Linux. In testing UASP performs with a 70% faster read speed and 40% faster write speed over traditional USB 3.0 at peak performance.
At the same peak in testing UASP also shows an 80% reduction in required processor resources.
Testing results were obtained using an Intel® Ivy Bridge system, a UASP enabled StarTech.com Enclosure, and a SATA III solid state drive.
The StarTech.com Advantage
Versatile connectivity options, through either USB or eSATA
Time-saving file transfers, up to 70% faster than traditional USB 3.0 when used with a UASP-supported host
Achieve greater drive capacity or secure data redundancy with multiple RAID modes
Maximize performance, with file transfer speeds up to 6Gbps using SATA III
Business applications that require external RAID storage for data redundancy
Video editing or photography professional/enthusiasts working with very large file sizes
Transfer large files between computers quickly and securely without a network
Scenarios requiring easy storage transferability between different computer systems and large volume external storage for backups/archiving
Drive ConnectorsSATA Data & Power Combo (7+15 pin) Receptacle Host ConnectorseSATA (7 pin, Data) Female ''USB Type-B (9 pin) USB 3.0 Female Humidity20%RH ~ 80%RH Operating Temperature5°C to 35°C (41°F to 95°F) Storage Temperature-20°C to 50°C (-4°F to 122°F) Chipset IDJMicron - JMS562 Compatible Drive TypesSATA Drive InstallationFixed Drive Size3.5in Fan Bearing TypeBall Bearing Fan(s)Yes Fans40 mm InterfaceeSATA ''USB 3.0 Number of Drives2 Number of internal 3.5 inch bays2 LED IndicatorsDrive 1 Activity LED ''Drive 2 Activity LED ''Enclosure Power LED Package Height14 cm [5.5 in] Package Length25.6 cm [10.1 in] Package Width18 cm [7.1 in] Shipping (Package) Weight1.4 kg [3 lb] Hot Swap CapabilityYes Max Drive CapacityCurrently tested with up to 4TB 7200 RPM hard drive MTBF30,000 hours Port MultiplierYes RAIDYes Supported RAID ModesBIG (Spanning or Concatenation) ''JBOD - (Just a Bunch of Disks) ''RAID 0 (Striped Disks) ''RAID 1 (Mirrored Disks) Type and RateSATA III (6 Gbps) ''USB 3.0 - 5 Gbit/s UASP SupportYes ColorBlack MaterialAluminum and Plastic Product Height8.5 cm [3.3 in] Product Length17.6 cm [6.9 in] Product Width11.3 cm [4.4 in] Weight of Product620 g [21.9 oz] Center Tip PolarityPositive Input Voltage100 - 240 AC Output Current3 A Output Voltage12V DC Plug TypeM Power Consumption (In Watts)36 Power SourceAC Adapter Included Microsoft WHQL CertifiedYes OS CompatibilityOS independent; No software or drivers required Included in PackageeSATA cable ''instruction manual ''rubber foot set ''universal power adapter (NA,EU,UK) ''USB 3.0 cable ''USB 3.0/eSATA HDD RAID enclosure
| Stock code || IB-ST-2EU3B|
| Brand || StarTech|
| Series || 2-Bay SATA -to- eSATA+USB3|
| Model || S3520BU33ER|
| Type || Case for 2x SATA HD; RAID 0/1 with UASP, Black|
| UPC || 065030853613|
| ROHS || Y|
| Date added || 05/12/2013|
S3520BU33ER Spec Information
| Form Factor / Drive Height || 17.6cm x 11.3cm x 8.5cm|
| Platter size || 3.5"|
| Guarantee || 2yr|
| Total Drives || 2|
| RAID || JBOD:0:1:|
S3520BU33ER Spec Connections
|USB3||USB3 type B||External||1|
|SATA||SATA 7-pin Discrete||Internal||2|
| Weight (kg) || 1.36kg|
| Weight (bare) || 620g|
| External Length (mm) || 256cm|
| External Width (mm) || 180cm|
| External Height (mm) || 140cm|
| Colour || Black |
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