Usb 30 stick memory size 128 gb read speed 220 mbs write speed 135 mbs backward compatible with usb 20 memory type flash memory material aluminum series adata elite certificatessafety fcc ce vcci rohs manufacturers warranty lifelong weight 11 g additional information read and write speed may vary depending on the capacity compatible operating systems windows xp windows vista windows 7 windows 8 windows 10 mac os 9 linux 24 fastener retrac