This allows you to rotate the control module so that the cables exit the back of the printer. Purely a cosmetic improvement, but one I really like.

You will need ot print four of these out, and they are attached in pairs, the bar on the top of the prints goes into the slot on the control module, you will need to attach using two screws on each of the brackets. I attached the ones on the inside of the printer first, closest to the tool head mount, then i put the control module onto the brackets, while attaching the outside ones.