Model Number : N50 > N50-AS031C N50-123456 N50-234567 InterfaceUSB 2.0 x 1Capacities500GB/1TBPerformance5400RPMContentsLeather II external hard diskUser manualUSB 2.0 cableProtection caseSystem RequirementsWindows® 7 Windows® Vista Windows® XP Mac OS X 10.5Dimensions135.5x80.6x14.6mm