Is the ADC not compatible with the Digital I/O board? I have a v1.2 board and an ADC both from mister addons, but every reference I can see to installing the ADC has it on the Analog board. The Digital must have its fan mounting holes shifted a bit from the Analog because the hole in the ADC doesn't line up with the hole on the Digital board. Without securing it to the I/O board, all of the insertion force on the ADC port would be transferred to the pins it's connected to on the DE10. Seems like that can't be correct.
I know I'll probably never use the ADC, but I thought I'd just install the optional parts anyway.
