HTS421280H9AT00 Hitachi TravelStar 80 GB 4.2K RPM 8MB Buffer 2.5 Inches Form Factor ATA-IDE Notebook Hard Drive. New Pull.

Specification
Device Type Hard drive - internal
Width 2.8 in
Depth 3.9 in
Height 0.4 in
Weight 3.5 oz

Hard Drive
Form Factor 2.5" x 1/8H
Capacity 80 GB
Interface Type ATA-100
Buffer Size 8 MB
Features Fluid Dynamic Bearing (FDB) motor, TrueTrack servo technology, Adaptive Battery Life Extender (ABLE), Hitachi Voltage Efficiency Regulator Technology (HiVERT)

Performance
Drive Transfer Rate 100 MBps (external) / 47.5 MBps (internal)
Seek Time 11 ms (average) / 20 ms (max)
Track-to-Track Seek Time 1 ms
Average Latency 7.1 ms
Spindle Speed 4200 rpm

Reliability
Start / Stop Cycles 600,000

Expansion / Connectivity
Interfaces 1 x ATA-100 - 44 pin IDC
Compatible Bays 1 x internal - 2.5" x 1/8H