0A58607 Hitachi TravelStar 320 GB 5.4K RPM 8MB Buffer 2.5 Inches Form Factor SATA300 Notebook Hard Drive. New Pull.

Specification
Form Factor 2.5" x 1/8H 
Capacity 320 GB 
Interface Type Serial ATA-300 
Buffer Size 8 MB 
Features TrueTrack servo technology, Thermal Flyheight Control (TFC), Perpendicular Magnetic Recording (PMR), Enhanced Availability (EA) for 24x7 access to data 

Performance
Drive Transfer Rate 300 MBps (external) 
Internal Data Rate 91.1 MBps 
Seek Time 12 ms (average) / 20 ms (max) 
Track-to-Track Seek Time 1 ms 
Average Latency 5.5 ms 
Spindle Speed 5400 rpm 

Reliability
Start / Stop Cycles 600,000 

Expansion / Connectivity
Interfaces 1 x Serial ATA-300 - 7 pin Serial ATA 
Compatible Bays 1 x internal - 2.5" x 1/8H