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eSATAp / eSATA or USB 3.0 External 2.5in SATA III 6 Gbps Hard Drive Enclosure with UASP – Portable HDD / SDD

Product ID: S251SMU33EP

Turn a 2.5” SATA III HDD / SSD into an external hard drive that can connect to your computer through either eSATAp at 6 Gbps, or USB 3.0 with UASP at 5 Gbps

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

More Features . . .
  • 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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Available in
$45.99 USD

ID: S251SMU33EP

In stock: ?
USA: 1093  |  Canada: 74
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We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.


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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.

UASP Speed Diagram

At the same peak in testing UASP also shows an 80% reduction in required processor resources.

UASP Speed Diagram

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/eSATAp
  • Maximum portability with a small footprint, and support for eSATAp (no external power adapter required)
  • Save time, with file transfers up to 70% faster than traditional USB 3.0 when used with a UASP-supported host
Common Customer Questions

View FAQs...

Supports any operating system.
No additional drivers or software required.

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
Product Numbers
Warranty Information
Warranty 2 Years
Hardware
Bus Type USB 3.0 & eSATA
Chipset ID ASMedia - ASM1153E
ASMedia - ASM1456
Compatible Drive Types SATA
Drive Installation Fixed
Drive Size 2.5in
Fan(s) No
Interface eSATA
USB 3.0
USB 3.0 & eSATA
Number of 2.5 inch bays 1
Number of Drives 1
Performance
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
eSATA (6 Gbps)
UASP Support Yes
Connector(s)
Drive Connectors 1 - SATA Data & Power Combo (7+15 pin) Receptacle
Host Connectors 1 - Power eSATA (11 pin, eSATA/USB, 5V) Receptacle
1 - USB 3.0 Micro-B (10 pin, SuperSpeed) Female
Software
OS Compatibility OS independent; No software or drivers required
Indicators
LED Indicators 1 - Power/Activity
Power
Plug Type H
Power Source USB-Powered
Environmental
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)
Physical Characteristics
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]
Packaging Information
Shipping (Package) Weight 0.6 lb [0.3 kg]
What's in the Box
Included in Package 1 - USB 3.0/eSATAp 2.5" SATA Hard Drive Enclosure
1 - USB 3.0 Cable
1 - eSATA cable
1 - Installation screws (with screw driver)
1 - Phillips head screw driver
1 - USB to DC power adapter
1 - Instruction manual
USB 3.0 / eSATA 4-Bay 3.5in SATA III Hard Drive Enclosure w/ built-in HDD Fan & UASP – SATA 6Gbps
S3540BU33E

USB 3.0 / eSATA 4-Bay 3.5in SATA III Hard Drive Enclosure w/ built-in HDD Fan & UASP – SATA 6Gbps

Add four 3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA

$215.99

In stock:   USA: 132  |  Canada: 38

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

USB 3.0 / eSATA Dual-Bay Trayless 3.5” SATA III Hard Drive Enclosure with UASP - 2-Bay SATA 6 Gbps Hot-Swap HDD Enclosure
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USB 3.0 / eSATA Dual-Bay Trayless 3.5” SATA III Hard Drive Enclosure with UASP - 2-Bay SATA 6 Gbps Hot-Swap HDD Enclosure

Connect two hot-swappable 3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA

$145.99

In stock:   USA: 139  |  Canada: 7

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

USB 3.0 / eSATA 8-Bay Hot-Swap 2.5/3.5” SATA III Hard Drive Enclosure with UASP – 8-Bay SATA 6 Gbps Enclosure for HDD / SSD
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USB 3.0 / eSATA 8-Bay Hot-Swap 2.5/3.5” SATA III Hard Drive Enclosure with UASP – 8-Bay SATA 6 Gbps Enclosure for HDD / SSD

Connect eight hot-swappable 2.5/3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA

$391.99

In stock:   USA: 30  |  Canada: 0
USB 3.0 / eSATA 5-Bay Hot-Swap 2.5/3.5” SATA III Hard Drive Enclosure with UASP – 5-Bay SATA 6 Gbps Enclosure for HDD / SSD
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USB 3.0 / eSATA 5-Bay Hot-Swap 2.5/3.5” SATA III Hard Drive Enclosure with UASP – 5-Bay SATA 6 Gbps Enclosure for HDD / SSD

Connect five hot-swappable 2.5/3.5" SATA III hard drives to your computer externally through USB 3.0 with UASP or eSATA

$283.99

In stock:   USA: 124  |  Canada: 36

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2.5in USB 3.0 External SATA III SSD Hard Drive Enclosure with UASP – Portable External HDD
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2.5in USB 3.0 External SATA III SSD Hard Drive Enclosure with UASP – Portable External HDD

Turn a 2.5” SATA Hard Drive or Solid State Drive into a UASP supported USB 3.0 External Hard Drive

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In stock:   USA: 1818  |  Canada: 0
2.5in Aluminum USB 3.0 External SATA III SSD Hard Drive Enclosure with UASP for SATA 6 Gbps – Portable External HDD
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2.5in Aluminum USB 3.0 External SATA III SSD Hard Drive Enclosure with UASP for SATA 6 Gbps – Portable External HDD

Turn a 2.5” SATA Hard Drive or Solid State Drive into a UASP supported USB 3.0 External Hard Drive

$29.99

In stock:   USA: 821  |  Canada: 143

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2.5” USB 3.0 Aluminum SATA III Hard Drive Enclosure w/ UASP and Built-in Cable
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2.5” USB 3.0 Aluminum SATA III Hard Drive Enclosure w/ UASP and Built-in Cable

Turn a 2.5in SATA HDD/SSD into a complete external storage solution over USB 3.0 with UASP

$34.99

In stock:   USA: 592  |  Canada: 119

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

eSATA Cables (8)

3 ft eSATA and USB A to Power eSATA Cable - M/M
ESATAUSBMM3

3 ft eSATA and USB A to Power eSATA Cable - M/M

Connect power eSATA devices to the eSATA and USB ports on your computer

$29.99

In stock:   USA: 13  |  Canada: 1

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

Shielded eSATA Cable - M/M
ESATA3

3 ft Shielded External eSATA Cable M/M

Connect your external SATA storage devices to your Laptop or desktop.

$9.99

In stock:   USA: 690  |  Canada: 41

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1 Port SATA to eSATA Slot Plate Bracket
ESATAPLATE1

1 Port SATA to eSATA Slot Plate Bracket

Turn a standard SATA motherboard connection into an external eSATA port

$8.99

In stock:   USA: 250  |  Canada: 13

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

18in 1 Port SATA to eSATA Plate Adapter
ESATAPLT18IN

18in 1 Port SATA to eSATA Plate Adapter

Turn a standard SATA motherboard connection into an external eSATA port

$9.99

In stock:   USA: 208  |  Canada: 52

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1ft Low Profile SATA to eSATA Plate Adapter
ESATAPLT1LP

1ft Low Profile SATA to eSATA Plate Adapter

Add an eSATA port to your PC, extended from internal Serial ATA connection port

$8.99

In stock:   USA: 222  |  Canada: 12

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2 Port SATA to eSATA Slot Plate Bracket
ESATAPLATE2

2 Port SATA to eSATA Slot Plate Bracket

Turn two standard SATA motherboard connections into two external eSATA ports

$9.99

In stock:   USA: 359  |  Canada: 20

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2 Port Low Profile SATA to eSATA Plate Adapter - F/M
ESATAPLT2LPM

2 Port Low Profile SATA to eSATA Plate Adapter - F/M

Add two eSATA ports to your PC, extended from internal Serial ATA connection ports

$10.99

In stock:   USA: 78  |  Canada: 276

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2 Port Low Profile SATA to eSATA Plate Adapter
ESATAPLT2LP

2 Port Low Profile SATA to eSATA Plate Adapter

Add two eSATA ports to your PC, extended from internal Serial ATA connection ports

$11.99

In stock:   USA: 1291  |  Canada: 120

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

USB 3.0 Cables (9)

0.5m (1.5ft) Black SuperSpeed USB 3.0 Cable A to Micro B - M/M
USB3AUB50CMB

0.5m (1.5ft) Black SuperSpeed USB 3.0 Cable A to Micro B - M/M

Connect a USB 3.0 Micro USB external hard drive to your computer

$11.99

In stock:   USA: 1218  |  Canada: 85

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

Slim Micro USB 3.0 Cable - M/M - 2m (6ft)
USB3AUB2MS

Slim Micro USB 3.0 Cable - M/M - 2m (6ft)

Position your USB 3.0 Micro devices near your desktop or laptop computer easily, with a thin, more flexible cable

$16.99

In stock:   USA: 308  |  Canada: 39

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

Slim Micro USB 3.0 Cable - M/M - 1m (3ft)
USB3AUB1MS

Slim Micro USB 3.0 Cable - M/M - 1m (3ft)

Position your USB 3.0 Micro devices near your desktop or laptop computer easily, with a thin, more flexible cable

$14.99

In stock:   USA: 510  |  Canada: 110

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1m (3ft) Certified SuperSpeed USB 3.0 A to Micro B Cable - M/M
USB3CAUB1M

1m (3ft) Certified SuperSpeed USB 3.0 A to Micro B Cable - M/M

Connect your Micro-B USB 3.0 devices, with this high-quality USB 3.0 certified cable

$16.99

In stock:   USA: 538  |  Canada: 73

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

3 ft Black SuperSpeed USB 3.0 Cable A to Micro B - M/M
USB3SAUB3BK

3 ft Black SuperSpeed USB 3.0 Cable A to Micro B - M/M

Connect a USB 3.0 Micro USB External Hard drive to your computer

$12.99

In stock:   USA: 211  |  Canada: 119

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

Slim Micro USB 3.0 Cable - M/M - 15cm (6in)
USB3AUB15CMS

Slim Micro USB 3.0 Cable - M/M - 15cm (6in)

Minimize clutter and position your USB 3.0 Micro devices near your desktop or laptop computer easily, with a thin, flexible cable

$9.99

In stock:   USA: 413  |  Canada: 23

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to Micro B
USB3SAUB1

1 ft SuperSpeed USB 3.0 Cable A to Micro B

Connect a USB 3.0 Micro USB External Hard drive to your computer

$11.99

In stock:   USA: 1067  |  Canada: 233

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SuperSpeed USB 3.0 Cable A to Micro B
USB3SAUB3

3 ft SuperSpeed USB 3.0 Cable A to Micro B

Connect a USB 3.0 Micro USB External Hard drive to your PC or laptop

$12.99

In stock:   USA: 241  |  Canada: 0
Slim Micro USB 3.0 Cable - M/M - 0.5m (20in)
USB3AUB50CMS

Slim Micro USB 3.0 Cable - M/M - 0.5m (20in)

Minimize clutter and position your USB 3.0 Micro devices near your desktop or laptop computer easily, with a thin, flexible cable

$11.99

In stock:   USA: 61  |  Canada: 60

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

USB 3.0 Cards (2)

2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power
PEXUSB3S25

2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power

Add 2 SuperSpeed USB 3.0 ports to your PCI Express-enabled PC

$46.99

In stock:   USA: 1266  |  Canada: 53

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

4 Port PCI Express PCIe SuperSpeed USB 3.0 Controller Card Adapter with UASP -  SATA Power
PEXUSB3S4V

4 Port PCI Express PCIe SuperSpeed USB 3.0 Controller Card Adapter with UASP - SATA Power

Add 4 external USB 3.0 ports to a low profile or standard computer, through PCI Express

$58.99

In stock:   USA: 3805  |  Canada: 62

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

SATA Controller Cards (3)

2 Port SATA 6 Gbps PCI Express eSATA Controller Card
PEXESAT32

2 Port SATA 6 Gbps PCI Express eSATA Controller Card

Add Two eSATA 3.0 (6Gbps) Ports for High Speed Access to Large External Storage Solutions

$44.99

In stock:   USA: 154  |  Canada: 41

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

2 Port PCI Express SATA 6 Gbps eSATA Controller Card - Dual Port PCIe SATA III Card - 2 Int/2 Ext
PEXESAT322I

2 Port PCI Express SATA 6 Gbps eSATA Controller Card - Dual Port PCIe SATA III Card - 2 Int/2 Ext

Add 2 external or internal SATA 6 Gbps ports to a computer, through a PCI Express slot

$53.99

In stock:   USA: 642  |  Canada: 27

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

1x eSATA + 1x SATA 6 Gbps PCI Express SATA Controller Card Adapter
PEXSAT31E1

1x eSATA + 1x SATA 6 Gbps PCI Express SATA Controller Card Adapter

Add external and internal 6 Gbps SATA 3.0 ports for high speed storage access

$40.99

In stock:   USA: 63  |  Canada: 7

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our US warehouse isn’t enough to fulfill your order, we will transfer the required stock from our Canadian warehouse.

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Rating: 4 /5

Works great, but no eSATAp cable included

The drive works as expected with the exception that it doesn't come with an eSATAp cable which was the whole point of buying this product. It would have been nice to have it included or at least a somewhat prominent statement that it's not included so that I could have ordered it at the same time instead of waiting an additional week to to get my final solution.

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Startech.com - eSATAp / eSATA or USB 3.0 External 2.5in SATA III 6 Gbps Hard Drive Enclosure with UASP – Portable HDD / SDD

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