LaCie 40 GB Mobile External Hard Drive with FireWire and USB 2.0 Interface, Design by F.A .Porsche (300806) Universal USB and FireWire connectivity Lightweight, portable design Bus-powered, so no cumbersome AC adapter is required Made with a durable exterior to withstand life on the go Preformatted for immediate use, and no drivers required on Windows 2000/XP and Mac OS X