eSATAp / eSATA or USB 3.0 External 2.5in SATA III 6 Gbps Hard Drive Enclosure with UASP – Portable
HDD / SDD
StarTech ID: S251SMU33EP
The S251SMU33EP USB 3.0 / eSATAp drive enclosure turns a 2.5in SATA hard drive (HDD) or solid state drive
(SSD) into an external portable hard drive that can connect to any USB or eSATA-enabled computer system.
For fast performance and efficient data transfers when connected through eSATA, the enclosure supports full
SATA III transfer speeds -- up to 6 Gbps. For universal compatibility, the S251SMU33EP can be connected
through USB 3.0 with transfer speeds up 5 Gbps plus support for UASP, which delivers performance up to 70%
faster than conventional USB 3.0 when paired with a UASP-enabled host controller to utilize the full potential of
your SATA III hard drives. See our UASP testing results below for further details.
Designed for maximum portability, the S251SMU33EP doesn't require an external power adapter when
connected to an eSATAp (USB + eSATA combo) host port.
The 2.5in enclosure supports the fastest drive technologies including SATA III (6 Gbps), hybrid drives and solid
state drives (SSD), saving you time by ensuring you're getting the most out of your drive performance.
To ensure compatibility with your computer system, the S251SMU33EP supports all of the leading operating
systems, including: Microsoft Windows®, Apple® OSX, Linux, and Google Chrome OS™.
The S251SMU33EP 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
Take advantage of laptops and desktops that feature eSATA connectivity
Create a fast, portable external storage solution for Ultrabooks, laptops or Chromebooks
Add extra storage to any USB/eSATA-enabled computer system
Back up important data to an external storage device
Share large files between computers quickly and securely without a network connection
Retrieve data from your SATA drive, or turn your unused drive into additional external storage space
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Features
Supports SATA III & UASP for optimal performance
eSATA or USB 3.0 interface options
Supports power over eSATA (eSATAp, eSATA/USB combo port) with no additional power adapter
Aluminum enclosure
Compatible with SATA revision I/II/III (1.5/3.0/6.0 Gbps) drives
Compatible with USB 3.0 / 2.0 / 1.1 (5 Gbps / 480 Mbps / 1.5 Mbps) host connections
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Technical Specifications
Warranty 2 Years
Bus Type USB 3.0 & eSATA
Chipset ID ASMedia - ASM1153E + ASM1456
Compatible Drive Types (Type and Rate) SATA
Drive Installation Fixed
Drive Size 2.5in
Fan(s) No
Interface eSATA
Interface USB 3.0
Number of 2.5 inch bays 1
Number of Drives 1
Max Drive Capacity Currently tested with up to 2TB 7200 RPM hard drives
Maximum Data Transfer Rate 6 Gbps - eSATA
5 Gbps - USB 3.0
Type and Rate USB 3.0 - 5 Gbit/s
Type and Rate eSATA (6 Gbps)
UASP Support Yes
Drive Connectors 1 - SATA Data & Power Combo (7+15 pin) Receptacle
Host Connectors 1 - Power eSATA (11 pin; eSATA/USB; 5V) Receptacle
Host Connectors 1 - USB 3.0 Micro-B (10 pin; SuperSpeed) Female
Color Silver
Enclosure Type Aluminum and Plastic
Max Drive Height 0.4 in [9.5 mm]
Product Height 0.6 in [16 mm]
Product Length 4.9 in [125 mm]
Product Weight 3.4 oz [96 g]
Product Width 3 in [77 mm]
LED Indicators 1 - Power/Activity
Power Source USB-Powered
Humidity Operation Humidity: 10% ~ 90% RH
Storage Humidity: 5% ~ 95% RH
Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -10°C to 65°C (14°F to 149°F)
Shipping (Package) Weight 0.6 lb [0.3 kg]
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Included in Package 1 - USB 3.0/eSATAp 2.5" SATA Hard Drive Enclosure
Included in Package 1 - USB 3.0 Cable
Included in Package 1 - eSATA cable
Included in Package 1 - Installation screws (with screw driver)
Included in Package 1 - Phillips head screw driver
Included in Package 1 - USB to DC power adapter
Included in Package 1 - Instruction manual
Certifications, Reports and Compatibility
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