Iomega 320 GB Hi–Speed USB 2.0. Hard drive capacity: 320 GB, Hard drive interface: USB 2.0, Hard drive size: 88.9 mm (3.5 "). Weight: 1261 g, Width: 120.65 mm, Depth: 88.9 mm. Data transfer rate (max): 480 Mbit/s, Minimum processor: Pentium II / G3, Minimum RAM: 32 MB. Package dimensions (WxDxH): 317.50 x 88.90 x 215.90 mm