G-Technology G-DRIVE mini 250GB 7200RPM Portable External Hard Drive w/eSATA, USB 2.0, Firewire 400, Firewire 800 Interfaces 0G00213 Portable, high-speed external hard drives High-speed Interface - FireWire 800 (FireWire 400 via included cable) and USB 2.0 ports Compact size, weighs less than 9 oz. Bus powered - no AC adapter required (depends on system configuration) Integrated heat-sink provides near silent operation and ensures proper cooling for long life and data reliability