[Irinikus]

So these bigger systems I've never really read up on as much, despite them being insanely interesting haha.
Are you able to just swap the IR3 for IR4 boards in the Onyx 2? What's the supported range for an Onyx2? IR2 all the way to IR4?
And I'm assuming you can't mix /match various combinations of DGs, RMs, TMs, and GEs? Do they all have to be the same "generation" so to speak?

This table from Wikipedia should largely answer your question: (Although it doesn't show the parts which constitute the various RM's)