HTS541040G9SA00 Hitachi TravelStar 40 GB 5.4K RPM 8MB Buffer 2.5 Inches Form Factor SATA150 Notebook Hard Drive. New Pull.

Specification
Form Factor 2.5" x 1/8H
Capacity 40 GB
Interface Type Serial ATA-150
Buffer Size 8 MB
Features Fluid Dynamic Bearing (FDB) motor, Enhanced Adaptive Battery Life Extender

Performance
Drive Transfer Rate 150 MBps (external) / 61.6 MBps (internal)
Seek Time 12 ms (average)
Average Latency 5.5 ms
Spindle Speed 5400 rpm

Reliability
Start / Stop Cycles 600,000

Expansion / Connectivity
Interfaces 1 x Serial ATA-150 - 7 pin Serial ATA
Compatible Bays 1 x internal - 2.5" x 1/8H