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As i´m sure may of you, as me, have 3 screens from before we bought the th2g and we didn´t have a huge budget therefore are VGA and not DVI, i had a finding tonight when i finally got my th2g, before now i had been using 3 screens mainly for apps and work connecting them to 1 or more graphics cards, this was fine, however windows only recognised the models of 2 screens and not the third one, because it worked i didn´t pay attention to it, however running the matrox setup utility, even thought all 3 screens where active and running, it would only see 2, which, doesn´t make much sense, playing about with connectors and such i discovered it was one of the dvi adaptors, that while it worked, it would, for an unknown reason to me, not send info about the screen, (maybe only one way, instead of dual way data transfer?) aniway, i changed the adaptor for a spare one and it matrox detected it after that, as i said, visually all 3 screens worked, but not the setup, again i can´t say why but if you´re having a similar issue, try using a different all-togueter dvi adaptor (different brand and model).
Hope this is helpfull : )
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