HDD 320GB PATA Caviar Blue 7200rpm 16MB cache 
Model WD3200AAKB 
Interface type:ATA-100
Data Transfer Rate:100 MBps
Spindle speed:7200 rpm
Buffer size:8 MB
Performance
Drive Transfer Rate:100 MBps (external)
Seek Time:8.9 ms (average)
Track-to-Track Seek Time:2 ms
Average Latency:4.2 ms
Storage Controller
Type:None
Reliability
Start / Stop Cycles:50, 000
Storage Controller (2nd)
Type:None
Expansion / Connectivity
Interfaces 1 x ATA-100 - 40 pin IDC
Compatible Bays 1 x Internal - 3.5" x 1/3H
Compatible Slots x None
Environmental Parameters
Min operating temperature:32 F
Max operating temperature:140 F
Operating humidity range:5 - 95%
Vibration Tolerance:0.75 g @ 20-300 Hz
Sound emission:28 dBA
Dimensions
Height 1.02 in.
Width 4.02 in.
Depth 5.79 in.
Weight 1.32 lb.