Probably a simple question I might be able to google, but thought I might start here. I have a customer with a very large conference room and they want to install 4 TV's into this conference room. I am pretty sure it will be for display only, no sound, but it is possible they might want sound. Those 4 TV's must take their imput from one PC or laptop that will display to all 4 TV's simultaneously. Anyone have any recommendations?