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      ThinkPad 1.8-inch 250GB 5400rpm Serial ATA Hard drive - Overview


      Features and specifications

      The ThinkPad 1.8-inch 250GB 5400rpm Serial ATA hard drive (43N3418) option incorporates the latest technology for enhanced mobile productivity.

      • Serial ATA (SATA) interface conforming to SATA/High Speed Serialized AT Attachment
      • Low power consumption
      • Quiet operation, fluid dynamic bearing motor
      • State-of-the-art cache and, simultaneously with another task, error-correction algorithms
      • Full-track multiple-sector transfer without local processor intervention
      • Non-operating shock at 1500 G; operating shock at 500 G
      • 1.8-inch, 9.5-mm height MCC compliance
      • Up to 250 GB formatted capacity
      • 512 bytes/sector
      • No-ID recording format
      • Rotary voice coil motor actuator
      • Enhanced ECC simultaneously with another task
      • Advanced TMR heads with optimization writer enhancement
      • Load/unload head technology
      • Embedded sector Servo
      • Operating system independent, no OS drivers

      Performance specifications:

      • Interface: Serial ATA
      • Formatted capacity: Up to 250 GB
      • Rotational speed: 5400 rpm
      • Number of disks/drive: 2
      • Number of heads: 4
      • Interface transfer rate: 3.0 Gb/sec
      • Maximum media transfer rate: 721 Mbits/sec
      • Average read seek time: 15 ms
      • Latency (average): 5.5 ms

      Physical specifications:

      • Approximate height: 8.0 mm (.31 in)
      • Approximate width: 54.0 mm (2.13 in)
      • Approximate depth: 78.5 mm (3.09 in)
      • Approximate weight: 62 g (0.137 lb)


      1 year – Customer Replacement Unit (CRU) Service

      • Announce date: 23 Jun 2009 (Worldwide)
      • Planned availability date: 26 Jun 2009 (Worldwide)

      Hardware compatibility
      Machine - Models
      ThinkPad T400s, T410s
      ThinkPad X301

      For T400 compatible hard drives, go to:

      • ThinkPad 1.8 inch 250GB Hard Drive (Serial ATA) assembly
      • Publications

      Agency approvals
      CE, UL, MIC, TUV, BSMI, C-Tick, CUL, RoHS

      Continuous use of the hard drive, as in reading long video files, will impact battery life.

      Additional product information
      Service parts - Parts listing for your product
      Lenovo Support: Hard Drives: Reference Guide - A list of other internal and external notebook hard drives. Also has additional information which includes: User Handling Tips for Hard Drives, Lenovo Hard Drive Quick Test, Avoiding Hard Drive Damage, and Lenovo Hard Disk Drive Retention program information.
      User Handling Tips for Hard Drives
      Lenovo Hard Drive Quick Test - Desktops / Notebooks
      Troubleshooting Hard Drive Issues - ThinkPad
      Avoiding Hard Drive Damage
      Hard Disk Drive Retention ( ) - Describes Lenovo Hard Disk Drive Retention service offering. If the internal hard disk drive (HDD) or internal solid state drive (SSD) fails during warranty, Hard Disk Drive Retention lets customers keep the old drive and hold on to personal or business data.
      Personal Systems Reference (PSREF) - Comprehensive information on the features and technical specifications of Lenovo products.


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      • Alias ID: MIGR-73204
      • Document ID: PD005824
      • Last Updated :17 Jun 2014
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