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Simultaneous display on both desktop monitor and projector

We often have presentations where we hook up a laptop to a projector, and there's usually an easy way to produce a simultaneous display (one on the laptop screen, same one on the projector).

We have a reason to do this with a desktop as well. We bought a 2nd graphics card hoping it would let us do this. But I see nothing in Control Panel Display settings, etc. that will let us do it, it seems the only options are to show it on one vs. the other, or to extend the desktop to the projector. What we want to do is have a simultaneous display on both.

Is there some setting I'm just not seeing? Or is there some utility I need to download? Please let me know, thanks.

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Not a native feature of two card.

In reply to: Simultaneous display on both desktop monitor and projector

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(NT) OK will do, thanks.

In reply to: Not a native feature of two card.

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