I am not running a graphics card right now - the MoBo supports two monitors so I am using the D-Sub and the HDMI ports on the MoBo to run two 24 inch ASUS monitors. They have d-sub, hdmi and dvi ports. I would get two additional, identical monitors to build out to a 4 monitor system.
Asus tells me I will need to support all 4 monitors from graphics cards... I have looked and there are a lot of good quality g-cards available to do this - I was just hoping that I could continue to use the mobo to support my existing two monitors.