Fujitsu 320GB (MJA2320BH) 5400rpm SATA2 8MB Notebook Hard Drive (2.5 inch) Specification Mfr Part Number: MJA2320BH Capacity: 320 GB Rotational Speed: 5400 rpm Cache: 8 MB Interface: SATA2 Max. External Transfer Rate: 300 MB/s Seek Time: Track to Track: 1.5 ms Average: Read - 12 ms; Write - 14 ms Full Stroke: 22 ms Average Latency: 5.56 ms Power Requirements: Voltage: 5 V ± 5% Spin-up: 1.0 A typ. Read/Write: 1.4 W typ Idle: 0.60 W typ. (w/ Slumber mode) Standby: 0.13 W typ. (w/ Slumber mode) Shock: Operating: 350G @ 2ms Non-operating: 900G @ 1ms Dimensions (WxLxH): 2.8 x 3.9 x 0.37 inch / 70 x 100 x 9.5 mm Weight: 3.57 oz / 101 g