I have an InFocus 4805 with an M1-DA conector on the rear. I have a Denon 1910 that outputs DVI and I also have a PC that output's VGA. I have the supplied Infocus adaptor that changes the VGA into M1-DA and a Lindy Adaptor that changes DVI into M1-DA. The problem is I only have one M1-DA connection ? Does anyone know if a company makes a two into one M1-DA switcher ? At the moment I have to change the lead when I want a different source.