The 2.4r1 assembly manual only shows assembly for the plug_panel_filtered_mains.stl (lower), which is what I printed while waiting for my kit to ship with the power inlet that fits the plug_panel.stl (upper). Don’t be fooled like me.
On the subject of the power inlet … the default configuration puts the power switch oriented with off up and on down, which I cannot abide. A small prying tool on the switch’s latches frees it from the inlet housing to be reinstalled in the One True Orientation. Just take a snapshot of the power wiring on your switch before undertaking such shenanigans.