Usb 20 stick memory size 128 gb read speed 15 mbs write speed 10 mbs backward compatible with usb 11 memory type flash memory material plastic series sandisk cruzer manufacturers warranty 2 years preinstalled software sandisk secure access 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 fastener retractable usb plug colour black