Sure thing lol -
MX 5 and the heaphone amp above the eb vp are powered from the FASlink port - I bought a 9VDC converter which takes the 11V from the port and makes 9V for those two. It's built into this giant octopus cable that has 1 end for the FASLINK, (that's the green plug in the back), one end for a standard dc barrel jack (that's plugged into the headphone amp), one 5 pin midi (that plugs into the voes mbox 1->2way midi converter box under the switch on the right of the board) and one 7 pin midi which plugs into the MX-5. It's mostly hidden underneath the FM3, though can obv see all the ends! Complicated but works great.
The power plug in the back of the FM3 runs underneath and into that little power strip on the right hand side. I cut a hole in the side of the strip and connected hardwired the cable into the strip. So when I plug in i connect my power cable to the strip, and the FM3 doesn't need to be reconnected.
the little transformer is for connecting a mic input to input 2 - sometimes I like using the looper with a mic in!
Single footswitch is mostly undefined right now, but it's a direct connect to the FM3. Likely uses will probably be reverb hold, gain boost, maybe it'll vary per preset; i'm not sure yet, still feeling out how this new setup will work.
The box under the fsw is a voes MBOX - it takes one way midi and converts to two way midi so that the MX-5 can know the state of the blocks in the FM3 and update itself accordingly. You'll notice that there are two midi plugs connected to the FM3. It also holds up the footswitch.
Once I get this thing all dialed in i think i'm gonna be pretty happy with it!