Massive capacity - Whether they are in an external drive or a notebook computer, WD Scorpio Blue SATA drives are available in capacities up to 500 GB and offer the most available capacity for space-hungry operating systems, like Windows Vista®, with plenty of room left over for photos, music, and video.

Quiet - In a notebook drive, silence is golden. WD’s exclusive WhisperDrive™ combines state-of-the-art seeking algorithms to yield one of the quietest 2.5-inch hard drives on the market. These algorithms also optimize the way a drive seeks for data, which significantly improves power consumption. So now silence (and longer battery life) is golden.

Performance Specifications
	Rotational Speed	5,400 RPM (nominal)
	Buffer Size	8 MB
	Average Latency	5.50 ms (nominal)

Seek Times
	Read Seek Time	12.0 ms
	Track-To-Track Seek Time	2.0 ms (average)

Transfer Rates
	Buffer To Host (Serial ATA)	3 Gb/s (Max)

Physical Specifications
	Formatted Capacity	400,088 MB
	Capacity	400 GB
	Interface	SATA 3 Gb/s
	User Sectors Per Drive	781,422,768

Physical Dimensions
English
	Height	0.374 Inches
	Length	3.94 Inches
	Width	2.75 inches
	Weight	0.26 Pounds

Metric
	Height	9.5 mm
	Length	100.2 mm
	Width	69.85 mm
	Weight	0.117 kg

Environmental Specifications
Acoustics
	Idle Mode	24 dBA (average)
	Seek Mode 0	26 dBA (average)

Temperature (English)
	Operating	32° F to 140° F
	Non-operating	-40° F to 149° F

Temperature (Metric)
	Operating	-0° C to 60° C
	Non-operating	-40° C to 65° C

Humidity
	Operating	8-90% RH non-condensing
	Non-operating	5-95% RH non-condensing

Altitude (English)
	Operating	-1,000 feet to 10,000 feet
	Non-operating	-1,000 feet to 40,000 feet

Altitude (Metric)
	Operating	-305M to 3,050M
	Non-operating	-305M to 12,200M

Vibration
	Operating	0.00459 g²/Hz (10 to 500 Hz)
	Non-operating	0.05102 g²/Hz (10 to 500 Hz)