TECH SPECS:-

Capacity: 500000
Rotational Speed: 7200
Access Time: 10
Cache Size: 16
Internal/External: External
Interface: IEEE 1394 (Firewire),
SATA (Serial ATA),
USB - Universal Serial Bus 2.0

Storage
Capacity: 500 GB
Interface
Interface Connection: IEEE 1394 - 6 pin Powered (Firewire),
IEEE 1394b - 9 pin Unpowered (Firewire 800),
Serial ATA - 7 pin,
USB - Universal Serial Bus 2.0
Interface Type: IEEE 1394 (Firewire),
SATA (Serial ATA),
USB - Universal Serial Bus 2.0

Name:  WD My Hard Drive.jpg
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Performance
Access Time: 10 ms
Sustained Transfer Rate: 90 MBytes/sec
Host Transfer Rate: 150 MBytes/sec
Cache Size: 16 MB
Rotational Speed: 7200 RPM

General
Internal/External: External
Included Components: Cabling (Interface),
Installation Software,
Stand

Dimensions
Weight: 3.31 lbs
Depth: 6.8 in
Width: 1.7 in
Height: 6.3 in