Iomega Prestige Desktop Hard Drive, 640GB. Hard drive capacity: 640 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: USB 2.0. Colour of product: Silver. Weight: 976 g, Width: 31 mm, Depth: 198.6 mm. Data transfer rate (max): 480 Mbit/s, Minimum processor: Pentium II, Minimum RAM: 256 MB