Iomega 500 GB eSATA/USB 2.0 Hard Disk. Hard drive capacity: 500 GB, Hard drive rotational speed: 7200 RPM, Hard drive interface: Serial ATA. Weight: 909 g, Width: 121 mm, Depth: 197 mm. Data transfer rate (max): 480 Mbit/s, Minimum hard disk space: 200 MB, Minimum processor: Pentium III