SimpleTech Signature Drive 250GB USB 2.0 3.5" External Hard Drive (designed by Pininfarina) SP-U35/250 includes dc adapter plug in

Specifications
Device Type: Hard drive - external (portable)
Capacity: 250 GB
Form Factor: 2.5"
Interface: USB 2.0
Features: Bus Powered by USB
Width: 3 in
Depth: 5 in
Height: 0.6 in

Performance
Interface Transfer Rate: 480 Mbps
Spindle Speed: 5400 rpm

Expansion & Connectivity
Interfaces: 1 x USB 2.0 - 4 pin USB Type B
Compatible Bay: 2.5"
Power Source: USB bus