Control a headless Mac mini from another Mac
A Mac mini is often used on a desk, in a cabinet, or beside another Mac. Once it is set up and running BeyondDisplay, Mirror mode can show the Mac mini on another Mac and let you operate it there.
This is useful when you do not want a permanent monitor for the Mac mini, or when you only need to check it occasionally. It is not a hardware adapter, and it does not replace the initial macOS setup.