StarTech.com S3520BU33ER System manual
USB 3.0/eSATA Dual 3.5” SATA III Hard Drive External RAID Enclosure w/ UASP and Fan – Black
StarTech ID: S3520BU33ER
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.
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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.
Applications
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
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Features
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)
Hardware RAID
Plug-and-Play Compatible
Dual Drive Bay
Built-in Fan
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Technical Specifications
Warranty 2 Years
Chipset ID JM562
Compatible Drive Types (Type and Rate) SATA
Drive Installation Fixed
Drive Size 3.5in
Fan Bearing Type Ball Bearing
Fan(s) Yes
Fans 1 - 80 mm
Interface eSATA
Interface USB 3.0
Number of Drives 2
Number of internal 3.5 inch bays 2
Hot Swap Capability Yes
Max Drive Capacity Currently tested with up to 4TB 7200 RPM hard drive
Port Multiplier Yes
RAID Yes
Supported RAID Modes BIG (Spanning or Concatenation)
Supported RAID Modes JBOD - (Just a Bunch of Disks)
Supported RAID Modes RAID 0 (Striped Disks)
Supported RAID Modes RAID 1 (Mirrored Disks)
Type and Rate USB 3.0 - 5 Gbit/s
Type and Rate SATA III (6 Gbps)
UASP Support Yes
Drive Connectors SATA Data & Power Combo (7+15 pin) Receptacle
Host Connectors eSATA (7 pin; Data) Female
Host Connectors USB 3.0 B (9 pin; SuperSpeed) Female
Microsoft WHQL Certified Yes
OS Compatibility OS independent; No software or drivers required
LED Indicators 1 - Enclosure Power LED
LED Indicators 1 - Drive 1 Activity LED
LED Indicators 1 - Drive 2 Activity LED
Center Tip Polarity Positive
Input Voltage 100 ~ 240 AC
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Output Current 3 A
Output Voltage 12 DC
Plug Type M
Power Source AC Adapter Included
Humidity 20%RH ~ 80%RH
Operating Temperature 5°C to 35°C (41°F to 95°F)
Storage Temperature -20°C to 50°C (-4°F to 122°F)
Color Black
Enclosure Type Aluminum and Plastic
Product Height 3.3 in [85 mm]
Product Length 6.9 in [176 mm]
Product Weight 21.9 oz [620 g]
Product Width 4.4 in [113 mm]
Shipping (Package) Weight 47.8 oz [1355 g]
Included in Package 1 - USB 3.0/eSATA HDD RAID Enclosure
Included in Package 1 - eSATA Cable
Included in Package 1 - USB 3.0 Cable
Included in Package 1 - Universal Power Adapter (NA/EU/UK) or AU in Australia
Included in Package 1 - Rubber foot set
Included in Package 1 - Instruction Manual
Certifications, Reports and Compatibility
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