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I am trying to install a second monitor on my Optiplex 9020 DT (I'm using Windows 7 Professional). Both are Dell U2412M Flat Panel Monitors. I have one plugged in using a DVI and one with a VGA, as there aren't two DVI ports. The one plugged in using the DVI is recognized and is just fine. The other I can't get the computer to recognize at all.

Hennes
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  • possible duplicate of [Three native monitors on Dell OptiPlex 9010](http://superuser.com/questions/441378/three-native-monitors-on-dell-optiplex-9010) – CharlieRB Oct 13 '14 at 13:42
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    You may also want to take a look at the Dell site - [How to Deal with Multi Monitor Setup and Other Video Issues on My Dell OptiPlex Desktop.](http://www.dell.com/support/article/us/en/04/SLN209307/en) – CharlieRB Oct 13 '14 at 13:49
  • This is not an exact duplicate of that, as he isn't talking about DisplayPort technology, even though some of the content might be relevant. – Lance Roberts Oct 24 '14 at 17:12

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