Specifications
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Following are the specifications for the 160-GB 7200 RPM Serial ATA hard drive.

Feature Specification
Rotational speed (RPM) 7,200
Buffer size 8 MB
Average latency 4.2 milliseconds (ms)
Average read seek 8.9 ms (average)
Average write seek 10.9 ms (average)
Track-to-track seek time 2.0 ms (average)
Full stroke read seek 21 ms (average)
Buffer to host (Serial ATA) transfer rate 1,200 Mbits/s (maximum)
Buffer to disk transfer rate 748 Mbits/s (maximum)
Number of heads 4
Number of platters 2
Formatted capacity 160,041 MB
Interface Serial ATA (SATA)
Actuator type Rotary voice coil
Bytes Per Sector 512
User sectors per drive 312,581,808
Servo type Embedded
Current requirements
12 VDC Read/Write 450 mA
Idle 470 mA
Standby 23 mA
Sleep 23 mA
5 VDC Read/Write 800 mA
Idle 750 mA
Standby 330 mA
Sleep 200 mA
Power Dissipation Read/Write 12.80 Watts
Idle 9.50 Watts
Standby 1.90 Watts
Sleep 1.30 Watts
Environmental
Temperature 5 to 55° C (operating)
-40 to 65° C (non-operating)
Relative humidity (operating) 5 to 95% (non-condensing)
Shock (operating) 65 Gs (read) 2ms
Shock (non-operating) 300 Gs 2 ms
Dimensions
Height 1.028 inches
Width 4.0 inches
Length 5.787 inches
Weight 1.32 pounds