When you need just a little more distance, this cable will extend the reach of your USB A/B cable. Foil and braid shielding reduce EMI/RFI interference and twisted pair construction helps reduce crosstalk for a high speed, error-free data transfer. USB 2.0 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.