I’m wondering why the roon audio settings in my ROCK configured Intel NUC7i7DNHE sees 5 HDMI outputs (endpoints) when in reality there are only 3 max (2 external HDMIs) and one internal HDMI CEC header. In addition, roon starts numbering these beginning with 0 and going up to 4. The Intel tech manual for the NUC7i7DN board names the external HDMI port closest to the female power input (to the left as you look at the back panel of the NUC) HDMI 1, and the other external port, HDMI 2.
If I want to use one of the two external ports for multichannel HDMI output from the ROCK, which do I use, HDMI 1 or HDMI 2, and what does roon call it ? (from what I assume some others have indicated, roon may label HDMI 1 as HDMI 0?)