I just bought a projector, and a desktop computer(HP) which has only one video port(VGA). While using the projector with a desktop i need the monitor to function as primary and the projector to function as secondary screen so that i can effectively control the output of the projector. But since i have just one video port on my desktop I thought of extending to a form factor with VGA, DVI and HDMI. If i do so, can I get the original VGA function as primary while the extended port function as secondary? Or, can i get secondary and primary screens from the extended video ports (i.e form factor)?
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