08K1525 Hitachi TravelStar 20 GB 4.2K RPM 2MB Buffer 1.8 Inches Form Factor ATA-IDE ThinkPad Hard Drive. New Bulk Pack. Order Quantity 5pc.

Specification
Device Type Hard drive - internal
Width 2.1 in
Depth 2.8 in
Height 0.3 in

Hard Drive
Form Factor 1.8" x 1/8H
Capacity 20 GB
Interface Type ATA-100
Buffer Size 2 MB
Features Fluid Dynamic Bearing (FDB) motor, giant magnetoresistive (GMR) head technology, load/unload technology
Compliant Standards S.M.A.R.T.

Performance
Drive Transfer Rate 100 MBps (external) / 29.9 MBps (internal)
Seek Time 15 ms (average) / 26 ms (max)
Track-to-Track Seek Time 3 ms
Average Latency 7.1 ms
Spindle Speed 4200 rpm

Reliability
Non-Recoverable Errors 1 per 10^13
Start / Stop Cycles 300,000

Expansion / Connectivity
Interfaces 1 x ATA-100
Compatible Bays 1 x internal - 1.8" x 1/8H