Usb 30 stick memory size 64 gb read speed 120 mbs write speed 50 mbs backward compatible with usb 20 dimensions 51 4 x 20 x 12 mm materials carbon plastic certificatessafety fcc rohs bsmi weee kcc manufacturers warranty lifelong weight 83 g additional information read and write speed may vary depending on the capacity compatible operating systems windows 8 windows 7 windows xp mac os 10 linux 26 fastener retractable usb plug colours black