SimpleTech SP-U25/250 SimpleDrive 250 GB 2.5-Inch USB 2.0 Portable Hard Drive (Silver) 250 GB 2.5-inch USB 2.0 portable hard drive for fast, reliable desktop or laptop storage 5400 RPM spin rate; 8 Mb buffer cache; transfer speeds up to 480 Mb/s Powers via USB connection Designed by Pininfarina, the designer of Ferrari sports cars 1-year limited warranty