Toshiba 640GB Portable Hard Drive (Black)

The 640GB Portable Hard Drive from Toshiba is a high-capacity drive in a tiny package. The drive features USB 2.0 interface, a rotation speed of 5400rpm, and bus transfer rates of up to 60MB/sec. The drive is bus-powered and weighs less than half a pound, making it a truly portable solution for adding storage capacity to your mobile computer.