Usb 20 stick memory size 4 gb read speed 28 mbs write speed 22 mbs backward compatible with usb 11 memory type slc nand flash dimensions 60 9 x 19 3 x 8 5 mm material plastic series transcend jetflash certificatessafety bsmi fcc weight 85 g additional information read and write speed may vary depending on the capacity compatible operating systems linux 24 linux 26 mac os 9 mac os 10 windows 2000 windows 7 windows me windows vista windows xp