Product Information:

Western Digital 500GB WD5000AAKS SATA Hard Drive SATA 300 MB/s, 500 GB, 16 MB Cache, 7200 RPM. WD Caviar® SE16 7200 RPM next-generation SATA hard drives feature 16 MB cache for lightning-fast performance, cool and quiet operation and up to 500 GB of storage for capacity-hungry applications.
Model WD Caviar SE16 WD5000AAKS.

Performance Specifications
	Rotational Speed	7,200 RPM (nominal)
	Buffer Size	16 MB
	Average Latency	4.20 ms (nominal)
	Contact Start/Stop Cycles	50,000 minimum

Seek Times
	Read Seek Time	8.9 ms
	Write Seek Time	10.9 ms (average)
	Track-To-Track Seek Time	2.0 ms (average)
	Full Stroke Seek	21.0 ms (average)

Transfer Rates
	Buffer To Host (Serial ATA)	300 MB/s (Max)
	Buffer To Disk	748 Mbits/s (Max)

Physical Specifications
	Formatted Capacity	500,107 MB
	Capacity	500 GB
	Interface	SATA 300 MB/s
	User Sectors Per Drive	976,773,168

Physical Dimensions
English
	Height	1.028 Inches (Max)
	Length	5.787 Inches (Max)
	Width	4.00 Inches (+/- 0.010 inch)
	Weight	1.32 Pounds

Metric
	Height	26.1 mm (Max)
	Length	147 mm (Max)
	Width	101.6 mm
	Weight	0.6 kg

Environmental Specifications
Shock
	Operating Shock (Read)	65G, 2 ms
	Non-operating Shock	250G, 2 ms

Acoustics
	Idle Mode	28 dBA (average)
	Seek Mode 0	33 dBA (average)
	Seek Mode 3	29 dBA (average)

Electrical Specifications
Current Requirements
	12 VDC
	Read/Write	450 mA
	Idle	430 mA
	Standby	20 mA
	Sleep	20 mA

	5 VDC
	Read/Write	800 mA
	Idle	730 mA
	Standby	270 mA
	Sleep	250 mA

	Power Dissipation
	Read/Write	9.50 Watts
	Idle	8.75 Watts
	Standby	1.60 Watts
	Sleep	1.50 Watts