Usb 20 stick memory size 128 gb read speed 6 mbs write speed 2 mbs backward compatible with usb 11 dimensions 68 x 20 x 8 mm material aluminum series hama fancy special feature ja additional information read and write speed may vary depending on the capacity compatible operating systems mac os 9 mac os 10 windows 2000 windows 7 windows me windows vista windows xp fastener with cap