G-Technology G-DRIVE mini 320 GB USB 2.0/FireWire 400/800 Portable External Hard Drive Portable, high-speed external hard drives High-speed Interface - FireWire 800 (FireWire 400 via included cable) and USB 2.0 ports Bus powered when attached to a 6 or 9-pin FireWire port  no AC adapter required Integrated heat-sink provides near silent operation and ensures proper cooling for long life and data reliability Ships complete with all cables and high-quality protective carrying case