LCD 634 Problems

I recently installed my 634 Lcd. It is external and I have the serial cable going through a switch box. I was hoping this would allow me to connect two xomputers to the one LCD. When I first turned the power on the LCD looked like it was reseting. But, then nothing. Now it does not work. Can I only have it to one computer? Any help greatly appreciated.

Only one device can be talking to the 634 at a time. I don't see any reason why it's not possible, but you would have to make sure that you were configured properly to do so, though I can't imagine how.