Mad4SNK said:
If I use the Jamma connection would it not already be set for low resolution?
No, as MKL says if you turn on that button the video outputted through both the JAMMA and the VGA ports is hi-res, I don't think it would be possible to output low and hi res from 2 different connectors at the same sime, that's what the switch is for. You could have a JAMMA cab with a hi-res compatible monitor and without a VGA port.
And yes, using the hi-res video in a low-res only monitor could be dangerous for it. Actually I tried it once in my RGB TV (
) and the image didn't flicker, but it was doubled.