Need help with Cintiq

I have an outdated Mac and managed to set up open core so I can use the latest software, but the monitor doesn’t have an hdmi port for my cintiq. I have an adapter that I know works so I can connect them, but the display won’t work. Is this an easy fix in the settings or will I have to go deeper? And if so, what’s the easiest solution? I’m an artist, not a computer scientist

submitted by /u/Littlepanda8305
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