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.

Fast and efficient - With 5400 RPM spin speed and 12 ms access time and up to 3 Gb/s SATA interface speed, even the most demanding customer will appreciate the performance achieved by WD Scorpio Blue drives.

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.

Reliable and rugged - WD's ShockGuard technology protects the drive mechanics and platter surfaces from shocks. WD's SecurePark parks the recording heads off the disk surface during spin up, spin down, and when the drive is off. This ensures the recording head never touches the disk surface resulting in improved long-term reliability due to less head wear, and improved non-operational shock tolerance.

Tested for compatibility - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems.

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
	Transfer Rate (Buffer To Disk)	600 Mb/s (Max)

	Buffer to Host (EIDE)
	Mode 5 Ultra ATA	100 MB/s

Physical Specifications
	Formatted Capacity	250,059 MB
	Capacity	250 GB
	Interface	PATA 100 MB/s
	User Sectors Per Drive	488,397,168

Physical Dimensions
English
	Height	0.374 Inches
	Length	3.94 Inches
	Width	2.75 Inches
	Weight	0.22 Pounds

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

Environmental Specifications
Acoustics
	Idle Mode	22 dBA (average)
	Seek Mode 0	25 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% to 95% 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)

Electrical Specifications
Current Requirements
	5 VDC
	Read/Write	500 mA
	Idle	400 mA
	Standby	60 mA
	Sleep	60 mA

	Power Dissipation
	Read/Write	2.50 Watts
	Idle	0.85 Watts
	Standby	0.30 Watts
	Sleep	0.30 Watts