looking down into the lower hull you can see standoff's that are formed into the plastic to accomidate the distribution board that will be included with the basic kit. They are prethreaded for the same 10-24 nylon screws used to attach the Arm enclosure panels.
Before attaching the distribution board to the lower hull the ESC's should be plugged into the board. The kit includes heat shrink for reinforcing this connection. This one step will help to avoid a lot of crashes.These esc's came with XT60 connectors.