Please Note:The Extension Kit Cable 12m cannot be directly connected to a computer, it can only be used as the middle or final segments in a LINDY USB 2.0 Active Extension System Pro installation. The LINDY USB 2.0 Active Extension Pro Cable can be used as the middle and final segments in a long distance USB extender installation using the LINDY USB 2.0 Active Extension System Pro. The cable works in combination with the LINDY 8m Active Extension Cable Pro, 8m Active Extension Pro Hub or 12m Active Extension Pro Hub to create a USB 2.0 connection spanning up to 56m with either 1 or 4 USB 2.0 ports at the remote end. See below for more details on system installations. Check out ComputerActive\'s 4 Star review of the LINDY USB Active Extension System Pro! Installation To install a USB 2.0 Active Extension System Pro is simple. Start with an 8m Active Extension Cable Pro. Then use up to 4 additional 8m or 12m Active Extension Cables to extend your device further. If you wish to add extra USB ports or to connect a bus powered USB device, use either a 8m or a 12m 4 Port Extension Pro Hub kit as the final segment. The picture below is an example of a typical set-up. Package Contents 12m USB 2.0 Active Extension Cable Pro LINDY Manual