I have a client who has need for three monitors. He currently has two standard monitors and a large television behind him. Essentially he wants the television (HDMI) to mirror his second monitor (DVI) that is extending his 1st monitor (VGA). The first two are powered by dual screen, but his third is on a USB external monitor link. Because it is not consistently on, the television gives him a lot of hassle.
On my own test lab, I have a pair of SLI Nvidia cards, and though I have four monitors currently extending, I have not choices in there to change that up, I can duplicate all the others on one (which is not what he would want) and extend. That is it. No choices to only duplicate 1 of the monitors.
I know they are out there, and he has the option with the cheap USB external, so there has to be an internal card that does this. Anyone have specific models they have done with this configuration?