Well I tried unplugging my DBX and using its cable then connecting my QU 24 with the cable I no works then powering up the board. It sees nothing. I believe it should allocate an ip address but nothing.
Select a key fader select key. Press routing touch screen key then mix sends tab. Assign both key channels to left with the pan for stereo mix outs. Easy to overthink lots to think about with these desks.