Western Digital 500GB My Passport Studio FireWire 800/USB 2.0 Portable Hard Drive: * 500GB Expanded digital storage * USB 2.0, FireWire 800 Flexible interface with fast transfer speeds * 5400RPM For fast access and performance What It Holds: * Photos Up to 333,000 * Music Up to 142,000 songs * Video Up to 263 hours of HD video System Requirements: * Windows 2000, Vista, Windows 7 * Mac OS X 10.4.11, 10.5.2 Support and Warranty: * 2-year limited warranty