Hard Disk Model HITACHI HDS721680PLA380 Disk Family Deskstar 7K160 Form Factor 3.5" Capacity 80 GB (80 x 1 000 000 000 bytes) Number Of Disks 1 Number Of Heads 1 Rotational Speed 7200 RPM Rotation Time 8.33 ms Average Rotational Latency 4.17 ms Disk Interface Serial-ATA/300 Buffer-Host Max. Rate 300 MB/seconds Buffer Size 8192 KB Average Seek Time 8.5 ms Width 101.6 mm (4.00 inch) Depth 147 mm (5.79 inch) Height 26.1 mm (1.03 inch) Weight 560 grams (1.23 pounds) Required Power For Spinup 3300 mA Power Required (Seek) 7 W Power Required (Idle) 5 W Power Required (Standby) 2 W Manufacturer Hitachi Global Storage Technologies