Specifications： 320 GB
Model Number:    ST3320613AS
Interface SATA:  3.0Gb/s
Cache:           16 MBytes
Capacity:        320 GB
Guaranteed Sectors: 625,142,448

PHYSICAL  
Height (max):   20.17 mm  (0.794 inches)
Width (max):    101.6 mm  (4.000 inches)
Length (max):   146.99 mm  (5.787 inches)
Weight (typical): 405 grams  (0.893 pounds)

PERFORMANCE  
Spindle Speed:   7,200 rpm
Average latency: 4.16 msec
Random read seek time <11.0 msec
Random write seek time <12.0 msec
 
RELIABILITY  
Annual Failure Rate: 0.34%

POWER  
Maximum operating current, DC 2.0 amps