The InFocus SP-DOUSB-EXTENDER for ceiling installations and other applications requiring lengthy cables, a standard USB cable can leave you hanging. Using a simple USB cable connection between your laptop and the projector, your images are instantly and perfectly projected on screen. No buttons to push, no VGA cables to wrestle with. Once connected, the DisplayLink Driver auto-installs to the computer and automatically configures the projector within seconds. No more toggling or switching of screens. With the InFocus DisplayLink feature, you get the convenience of instant set-up and hassle-free projection that can even run up to six projectors off your laptop at one go.