You don't need a switch. You can just run a cat 5 between them and do all the setup in MOTU's Pro Audio Control. I have my 16R talking bidirectionally to a MOTU 112D. I haven't tried to see what would happen if I saved settings and then just connected the two without the computer - at the moment the 112D is connected to the PC over USB but I think it would work. If you plug a wireless access point into the MOTU I think you can log in via an iPad? But again I haven't done that.