Rocstor Rocport ID9 500GB USB 2.0/FW400/FW800 5400 RPM Portable External Hard Drive for PC and Mac-Red/Black Pocket size external storage drive USB 2.0, FireWire 400 (1394a) and FireWire 800 (1394b) connections Enhanced with shock-resistant casing, despite its small size Reduces power consumption with hard drive spin-down support Works with PC or Mac