Micronet G-Force Quad Interface 500GB eSATA / Firewire 800 / Firewire 400 / USB 2.0 w/ NTI Shadow Backup. Hard drive capacity: 500 GB, Hard drive rotational speed: 7200 RPM, Drive device, buffer size: 16 MB. Weight: 2400 g. Interface type: eSATA / Firewire 800 / Firewire 400 / USB 2.0, Power requirements: 110/220 V, Supported data transfer rates: 300MB/S (eSATA), 100MB/S (FireWire 800), 50MB/S (Firewire 400), 60 MB/S (USB 2.0)