Using a Sawtooth G4, with a USB 2 card, we are not able to capture video to an external USB 2 hard drive with FCP from an XM-1 or a GL-1 Canon camcorder without freezes and or dropped frames. USB 2.0 is rated at 480 Mbps, and FireWire 1394a - 400 Mbps, but as Shirley said: Just be aware that not all 2.0 USB devices are high speed. Lynn ................................... Producer of the upcoming action thriller "Search Dog's Raven" (SearchDogsRaven.com) ...Any search can turn deadly, as a young woman and her wilderness search dog are lured into an eerie murder...