Preformatted and ready to go, Western Digital's USB 2.0 external hard drive makes it possible to add reliable, high-performance storage instantly to your PC or Macintosh. Simply plug into a USB port or USB PCI adapter card and within seconds back up your valuable data or store large multimedia files. Multiple drives stack together and can be routed through a hub, enabling you to further expand your storage capacity. Designed with Western Digital's 7200 RPM WD Caviar hard drive and a high-speed USB 2.0 bridge, this external hard drive provides maximum storage performance.

Features Product Description - Hard drive - 120 GB - Hi-Speed USB
Type - Hard drive - standard
Form Factor - External
Dimensions (WxDxH) - 6.1 in x 8.6 in x 1.7 in
Formatted Capacity - 120 GB
Interface Type - Hi-Speed USB
Average Seek Time - 8.9 ms
Spindle Speed - 7200 rpm
Cache / Buffer Size - 2 MB
Power - AC 100/240 V ( 50/60 Hz )