Usb 20 stick memory size 8 gb read speed 15 mbs write speed 5 mbs backward compatible with usb 11 memory type flash memory dimensions 62 x 32 x 22 mm series emtec superhero additional information read and write speed may vary depending on the capacity compatible operating systems linux 26 mac os windows 2000 windows 7 windows 8 windows me windows vista windows xp fastener with cap