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I am trying to plug into an external display through a VGA -> Component and need the resolution to be lower than this even possibly with Mountain Lion?

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It depends on the graphic card. Are you connecting the external display to a desktop (Mac Pro) or to a notebook (MacBook/Pro/Air)? Which model exactly? – jaume Nov 28 '12 at 15:56
13' MacBook Pro mid-2010 Graphics NVIDIA GeForce 320M 256 MB – Jeff C. Nov 28 '12 at 20:27
According to you can get as low a resolution as 640x480 for the internal display. I guess you should simply try it, if the display supports such a low resolution the graphic card will play along. – jaume Nov 28 '12 at 20:35 Those are the only options I have as far as internal display. – Jeff C. Nov 28 '12 at 20:50
So you can't get a lower resolution than 800x600, which kind of invalidates my previous comment. You may find this useful, which explains how to set a custom resolution. – jaume Nov 28 '12 at 21:47

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