What is the purpose of the jacks J101 and J603 behind the mini-PC connector? I didn’t find any mention in the documentation.
Are these connectors for two additional fans as they say “Two fan collectors, for connecting an additional cooling fan, of the same voltage as at the input of the DC connector”?
Never used these, but they do look exactly like fan connectors on some other boards… so yes, they very likely are just FAN headers.