HTS424040M9AT00 Hitachi TravelStar 40GB 4.2K RPM 2MB Buffer 2.5 Inches Form Factor ATA-IDE Notebook Hard Drive. New Pull.

Specification
Form Factor 2.5" x 1/8H
Capacity 40 GB
Interface Type ATA-100
Buffer Size 2 MB
Features Fluid Dynamic Bearing (FDB) motor, TrueTrack servo technology, Adaptive Battery Life Extender (ABLE)
Compliant Standards S.M.A.R.T.

Performance
Drive Transfer Rate 100 MBps (external) / 46.3 MBps (internal)
Seek Time 12 ms (average) / 23 ms (max)
Track-to-Track Seek Time 2.5 ms
Average Latency 7.1 ms
Spindle Speed 4200 rpm

Reliability
Non-Recoverable Errors 1 per 10^13
Start / Stop Cycles 600,000

Expansion / Connectivity
Interfaces 1 x ATA-100
Compatible Bays 1 x internal - 2.5" x 1/8H