The Clickfree Traveler is a Sleek, Automatic Backup Solution that’s the Size of a Credit Card! Wrapped in a Durable Aluminum Chassis, the Traveler easily connects to your PC or MAC with its slim USB connector that swings out from one side. WINDOWS® 7 READY WORKS WITH: Windows® 7, Windows Vista®, Windows® XP and Mac OS X 10.5 or later with Intel Processor