When you need just a little more distance this cable will extend the reach of your usb ab cable foil and braid shielding reduce emirfi interference and twisted pair construction helps reduce crosstalk for a high speed error free data transfer usb 20 compatible pc and mac compatible please note not for use beyond a total extended single length of 5 metres for longer lengths or high powered devices please use product 81655 5m usb a male to a female active extension cable