Usb 30 stick mini usb stick memory size 64 gb read speed 130 mbs write speed 40 mbs backward compatible with usb 20 memory type flash memory material plastic series sandisk ultra preinstalled software sandisk secure access weight 2 g additional information read and write speed may vary depending on the capacity compatible operating systems windows 7 windows 8 windows vista windows xp mac os 10 mac os 10 linux 24 fastener with cap colour black