That is what I currently have, but doing this creates a fourth "phantom" monitor with Windows 7. I found this out because an enduser accidentally moved the Excel spreadsheet she was working on to that monitor, and could not find it. I had to activate that monitor and de-activate another one to get Excel back (so she could access and use it.) Several endusers feel they will be far more productive with 3 monitors, as opposed to the 2 monitors they currently have / use. Do you know of a way to "short out" the fourth port? Also, I am on a limited, scrutinized budget.