WiFi Only: If you have the WiFi version of the Duet 3 Mini 5+ you will not need to connect an Ethernet cable.

Cover the cut-out for the ethernet connector with board_rj45_cap.

Ethernet Only: If you have the Ethernet version of the Duet 3 Mini 5+ you will need access to its Ethernet port.

Leave the board_rj45_cap off the case as the cut-out will allow you to attach an ethernet wire to the board.