Usb 30 stick micro usb stick memory size 64 gb read speed 80 mbs write speed 10 mbs other interface micro usb backward compatible with usb 20 memory type flash memory material plastic series integral slide special feature usb otg manufacturers warranty 2 years additional information read and write speed may vary depending on the capacity compatible operating systems windows xp windows vista windows 7 windows 8 mac os 10 mac os 10 fastener retrac