I receive AD2PI today. It is about time to wire the board with 20P panel. I can't seem to find any label on AD2PI board indicating which hole is 12V, GND, DI or DO. I don't want to take any guess. is there a document or a picture showing that? I search "Documentation" section, all I find are referring to AD2USB or AD2SERIAL boards. it seems a bit lack of installation guide for AD2PI specific. Can you pls shed some lights here.