I designed this mount inspired by the one done by Krapozok (https://www.thingiverse.com/thing:1793758). In the original thing instruction you can find the link for the 2U frame used for the module.
There is one file with the whole faceplate and the faceplate in two files, in case you want to color code your modules with dual extrusion (could also be done with the single file and switching filament somewhere over 2mm print height).
I also separated the mount and the faceplate so it can be printed stronger orientationwise. The parts are screwed together by 2 M3x10 screws.