G-Technology G-DRIVE slim 500GB Portable External Hard Drive for MacBook Air: * 500GB capacity * USB 3.0 interface * 5400 RPM * Plug and play * Color: silver * What It Holds: * Photos: up to 333,000 * Songs: up to 142,000 * Video: up to 263 hours of HD video * Compatible with Mac OS X 10.5 or newer, Windows XP/Vista/7