Western Digital My Book Essential 500 GB USB 2.0 3.5-inch External Hard Drive

General Features:
500 GB capacity
3.5-inch hard drive
Back up your files among multiple computers
The enclosure's heat dissipating design with Morse Code prevents heat buildup, a notorious data killer
Slim design helps it fit right in by taking no more space than a paperback book
Plug amp; Play
Hard drive capacity gauge
PC amp; Mac compatible
Kensington Lock port
Lead-free construction (RoHS compliant)

Interface:
One (1) USB 2.0 port (mini-B Female)

Data Transfer Rate:
USB 2.0: 480 Mbits/s

Unit Dimensions:
6.5 x 2.1 x 5.4-inches (H x W x L)
2.5 lbs

Power Specifications:
AC Input Voltage: 100-240V
AC Input Frequency: 47-63 Hz max 700 mA 50VA
Adapter DC Output: 12V --- 2A