1,mini metal key usb 2, Usb 2.0 3, Portable to take along 4, 1 year guaranty 5, Good quality mini metal key usb1 ... .suppport usb full-speed (12mbps) transmission2.Windows ... ,Linux 2.4.x,Mac Os9.1/mac 0s X,Linux 2.4x which support usb mass storage protocol,no drive installation ...