Iogear 3.5IN USB 2.0 + FirewireHard Drive (GHE135C) Both USB 2.0 and FireWire compatibility High data transfer rates of up to 400 Mbps (FireWire) and 480Mbps (USB 2.0) Hot swappable and Plug-n-Play Backward compatible with USB 1.1 specifications Compact size, perfect for the desktop professional