Iomega UltraMax™ Hard Drive 750GB eSata/FW800/400/USB. Hard drive capacity: 750 GB, Hard drive rotational speed: 7200 RPM, Drive device, buffer size: 8 MB. Colour of product: Silver. Weight: 1140 g. Data transfer rate: 3 Gbit/s, Power requirements: 5 VDC +/- 5%; 12VDC +/- 10%, Supported data transfer rates: 800, 480, 400 Mbit/s