Usb 30 stick memory size 128 gb read speed 140 mbs write speed 20 mbs backward compatible with usb 20 memory type flash memory dimensions 20 x 15 x 6 mm material metal series integral fusion weight 3 g additional information read and write speed may vary depending on the capacity compatible operating systems linux 24 mac os 10 windows 7 windows vista windows xp fastener with cap