Forgive my return to this forum for what I suppose Will reveal my technological incompetence. I have an unboxed Mac Mini 2012 and a relatively new Dell U2412m. Thanks to the answers from another question earlier on this forum, I will connect them via HDMI. I fear I am faced with a chicken and egg dilemma. I think I can set the input source on the Dell from the OSD independent of the Mac Mini. I suppose my simple question is, what issues may arise when I try and set up the Mac Mini and how would I resolve them? Thanks in advance.