Usb 20 stick memory size 4 gb read speed 20 mbs write speed 6 mbs backward compatible with usb 11 memory type flash memory dimensions 63 x 18 x 9 mm material plastic series takems colorline nt special feature bootable preinstalled software xbox 360 software update weight 10 g additional information read and write speed may vary depending on the capacity compatible operating systems mac os 9 mac os 10 mac os 86 windows 2000 windows vista windows x