Iomega eGo Jet Black Portable Hard Drive 320GB FireWire 400/USB 2.0 . Hard drive capacity: 320 GB, Hard drive rotational speed: 5400 RPM, Drive device, buffer size: 8 MB. Colour of product: Black. Weight: 165 g, Width: 126 mm, Depth: 74 mm. Minimum hard disk space: 1 MB, Minimum processor: 300MHz, Mac G3, Minimum RAM: 256 MB