WD Scorpio Blue 250 GB PATA Hard Drives ( WD2500BEVE)

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
	Depth	3.94 Inches
	Width	2.75 Inches
	Weight	0.22 Pounds

Metric
	Height	9.5 mm
	Depth	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