Performance specifications
Rotational speed	7,200 RPM (nominal)
Buffer size	16 MB
Load/unload cycles	300,000 minimum
Transfer rates
Transfer rate (Buffer To Disk)	126 MB/s (Max)
Physical specifications
Formatted capacity	250,059 MB
Capacity	250 GB
Interface	SATA 6 GB/s
User sectors per drive	488,397,168
Physical dimensions
English
Height	1.028 Inches
Depth	5.787 Inches
Width	4.00 Inches
Weight	1.52 Pounds
Metric
Height	26.1 mm
Depth	147 mm
Width	101.6 mm
Weight	0.69 kg
Environmental specifications
Shock
Operating shock (Read)	30G, 2 ms
Non-operating shock	300G, 2 ms
Acoustics
Idle mode	28 dBA (average)
Seek mode 0	33 dBA (average)
Temperature (English)
Operating	32° F to 140° F
Non-operating	-40° F to 158° F
Temperature (Metric)
Operating	-0° C to 60° C
Non-operating	-40° C to 70° C
Electrical specifications
Current requirements
Power dissipation
Read/Write	6.80 Watts
Idle	6.10 Watts
Standby	0.70 Watts
Sleep	0.70 Watts

As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on the operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second and gigabit per second (Gb/s) = one billion bits per second. 

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