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The MK2555GSX 2.5-inch Hard Disk Drive offers quiet acoustics and enhanced durability, providing a solid storage solution for high-capacity mobile PCs, game consoles, printers and external storage. Advanced servo techniques combined with mechanical design changes minimize noise and make them nearly inaudible during operation, with the 250GB model performing close to the threshold of human hearing.
Further design optimizations have boosted the durability of the MK2555GSX to provide industry-leading robustness against operating shock. An optional free-fall sensor (FFS) feature further protects user data against potentially hazardous external shock and vibration events.
Key Features
- 250 Gigabytes* of Storage Capacity
- 5,400 RPM Spin Speed
- Serial ATA 3.0 Gbps and Extended SATA Features
- Light-weight, Standard 9.5mm-High Design
- Super-quiet Seek Technology
- Eco-friendly Design in Materials and Low Power Consumption**
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| Overview: |
| Storage Capacity |
250GB* |
| Data Heads |
2 |
| Number of Disks |
1 |
| Interface |
SATA 3.0Gb/s (SATA Revision 2.6/ATA-8) |
| Sector Size |
512 |
| Performance: |
| Rotational Speed |
5,400 RPM |
| Average Latency |
5.55ms (avg) |
| Data Buffer |
8MB*** |
| Transfer Rate to Host |
3.0Gb/s |
| Power Requirements: |
| Power Supply |
+5V(+/-5%) |
| Spin-up |
4.5watts (peak max) |
| Read/Write |
1.4watts (typ) |
| Standby**** |
0.18watts (typ) |
| Sleep**** |
0.13watts (typ) |
| Seek Time: |
| Track-to-track |
2ms |
| Average |
12ms |
| Maximum |
22ms |
| Physical & Environmental Specs |
| Dimensions/Weight: |
| Height |
0.37" (9.5mm) |
| Width |
2.75" (69.85mm) |
| Depth |
3.94" (100mm) |
| Weight: |
3.45 oz (98g) |
| Ambient Temperature: |
| Operating |
41°- 131°F (5° to 55°C) |
| Non-Operating |
-4° - 140°F (-20° to 60°C) |
| Shipping |
-40° - 158°F (-40° to 70°C) |
| Vibration and Shock: |
| Operating Vibration |
1.0G (5 - 500 Hz) |
| Operating Shock |
350g/2ms |
| Non-Operating Shock |
900g/1ms |
| Acoustics: |
| Idle |
1.9 bels |
| Seek |
2.0 bels |
| Reliability Characteristics |
| Error Rates: |
| Non-recoverable |
1 in 1014 bits |
| Seek |
1 in 106 seeks |
| Other: |
| Preventive Maintenance |
None |
| MTBF (Power on hours) |
600,000 |
| Warranty |
3 Year Manufacturer Warranty |
* One Gigabyte (1 GB) means 109 = 1,000,000,000 bytes using powers of 10. A computer operating system, however, reports storage capacity using powers of 2 for the definition of 1 GB = 230 = 1,073,741,824 bytes, and therefore shows less storage capacity. Available storage capacity will also be less if the computer includes one or more pre-installed operating systems, pre-installed software applications, or media content. Actual formatted capacity may vary.
** Free of brominated flame retardants (BFR) and polyvinyl chloride (PVC); hazardous halogens, antimony trioxide and red phosphorous also eliminated from all components in the MKxx55GSX drive series.
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Buffer space available to the user.
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S-ATA power management features applied.
Subject to Change
While Toshiba has made every effort at the time of publication to ensure the accuracy of the information provided herein, product specifications, configurations, prices, system/component/options availability are all subject to change without notice.
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The OWC 5-Piece Mini Toolkit includes the right size tools needed to install memory and/or drives into most laptop or desktop/tower computers. |

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Toolkit Contains:
- Nylon Spudger
- Phillips #00
- Straight Blade 1.8mm
- Torx T8
- Torx T6
Need more "spudgers"? Get them now so you're prepared!
Replace or purchase more Nylon pry tools* "spudgers" with the Newer Technology 2 Piece Pry Tool Set for only
$0.99
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Pocket-sized USB bus powered ventilated enclosure for a 2.5" Serial ATA (SATA) I/II hard drive or SSD offering the ultimate combination
of style and value in portable data storage and backup.
Express your digital life with style, convenience, and value!
The 2 oz., pocket-sized OWC Express USB 2.0 Enclosure offers bus powered* personal storage performance in an ultra-portable design. With no AC adapter needed, a USB connecting cable and carrying sleeve included, and compatibility with Macs and PCs, the OWC Express puts your music, photos, and personal data in the fast lane.
*Bus powered via USB port on most computers, provided computer's bus supplies appropriate power needs.
Compact and versatile - No AC Adapter Required!
The OWC Express 2.5" USB 2.0 Enclosure offers maximum mobile data storage/backup potential with a sleek, totally bus powered design. Just add your own 2.5" Serial ATA (SATA) I/II hard drive up to 9.5mm height and take your digital life with you wherever you roam! |
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| Chipset: |
Jmicron 20329 USB 2.0 chipset |
| Interfaces Supported: |
- USB 2.0
/ 1.1 Backwards compatible
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| Port Configuration: |
- USB 2.0 - (1) mini "B" port
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Maximum Data
Transfer Rate: |
- USB 2.0 - 480Mbps (or 60MB/sec)
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| System Requirements: |
USB 2.0:
- Macintosh: Macintosh with USB interface, either built in or via 3rd party card. USB 2.0 drivers required for use with Mac OS X, USB 2.0 not supported on any other Macintosh OS. Mac OS 8.6 and above for use with USB 1.1. USB 2.0 is fully backwards compatible with USB 1.1.
- PC: PC with USB interface and Windows 98 or other OS with USB support. USB 2.0 drivers required for USB 2.0 use. Check with your OS manufacturer for the availabilty of USB 2.0 drivers for your system, and if your USB card supports USB 2.0. USB 2.0 is fully backwards compatible with USB 1.1.
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| Cooling: |
Super quiet fanless ventilation |
| Power Supply: |
Bus Power via USB on all models with USB 2.0 port |
| Drive Requirements: |
Any 2.5" SATA hard drive. |
| External Case Dimensions: |
3.07" (W) x 5.12" (D) x .55" (H) |
Enclosure Weight
(no accessories): |
2.0 ounces (56g) |
| Operating Environment: |
| Temperature: |
Dependant on mechanism installed |
| Relative humidity: |
Dependant on mechanism installed |
| Shock: |
Dependant on mechanism installed |
| Vibration: |
Dependant on mechanism installed |
| Warranty: |
1 Year OWC Warranty
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| Other Views |
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| The OWC Express Kit Includes: |
- OWC Express 2.5" SATA Hard Drive Enclosure
- High Quality Double Shielded USB 2.0/1.1 (mini-B type) connecting cable
- Quick Installation Guide
- Carrying sleeve
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Assembly Instructions:
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