Can I power the board like this? Still undecided on what power module I will be using. Probable a Mauch or Power Brick.
That seems like one way you could set it up. Anything in particular that you are concerned with. I typically use the power module to power the flight controller and a BEC or voltage regulator to power the servo rail.
I could not understand why I was seeing power on the servo rail when the cube was plugged into the computer (USB). The Cubes power supply priority system is new to me, last hardware I used was APM2.x. Thanks for the clarification, I will power the cube from Power 1 and power the servo rail from the BEC.