Manufacturer's Specs

General
Interface	ATA
Guaranteed Sectors	781,422,768
Cache	8 MBytes
Capacity	400 GB
Number of pins on the I/O connector	40
Performance
Random write seek time	<12.0 msec
Maximum interface transfer rate	100 Mbytes/sec.
Average latency	4.16 msec
Spindle Speed	7200 rpm
Random read seek time	<11.0 msec
Power
Sleep power	0.807 watts
Maximum start current, DC	2.80 amps
Average seek power	12.40 watts
Average idle current	7.2 watts
Standby power	0.80 watts
Acoustics
Acoustics (Seek Volume)	3.7 bels
Acoustics (Idle Volume)	2.8 bels
Reliability
Annual Failure Rate	0.34 %
Unrecoverable read errors	1 in 10^14
Physical
Width (max)	101.85 mm (4.010 inches)
Weight (typical)	635 grams (1.39 pounds)
Height (max)	26.11 mm (1.028 inches)
Length (max)	146.99 mm (5.787 inches)

External links