When using dual out, do NOT use VGA. You'll run into issues every so often where the VGA monitor will not show the correct refresh rate or signal. If all you have on the video card is HDMI/DVI/Display, and want to use the VGA, simply use an HDMI or DVI to VGA adapter. You'll have alot less headache. But to answer your question, yes it will work, though not as well as it could.