Toshiba StorE Art 2.5" 320GB. Hard drive capacity: 320 GB, Hard drive speed: 5400 RPM, Hard drive interface: USB 2.0. Colour of product: Black. Width: 7.8 cm, Depth: 12.7 cm, Height: 1.31 cm. Hard disk transfer rate: 480 Mbit/s, Compatible operating systems: Microsoft Windows 2000/XP/Vista (32 & 64 bits)