Usb 20 stick memory size 4 gb read speed 15 mbs write speed 4 mbs backward compatible with usb 11 memory type flash memory dimensions 30 x 18 8 x 8 6 mm material plastic series transcend jetflash special feature ja certificatessafety bsmi fcc kcc c tick preinstalled software file rescue weight 85 g additional information read and write speed may vary depending on the capacity compatible operating systems linux 24 mac os 9 windows 2000 windo