I've splitted the part in two parts (top and bottom) as I wanted to hide the cable on the bottom and it lifted the dock.
In addition I've designed a pad for the bottom to be printed in flex filament (Ninjaflex, TPU) so that the dock doesn't slip on a glass surface.

The two parts are hold together by three M3 x 6mm Screws. The rubber part will be glued to the bottom part.

You need:
3x M3 x 6mm screws

No support needed

Print instructions

No Support needed

Update

07.05.2022 - As some of you requested, I've added a version where the bottom part can be screwed to the top part. One top part is for inserts, so that the screws are very safe. The other top part has smaller holes, so that the screws will be screwed directly into the plastic.

05.01.2022 - Bigger hole in main body for larger USB plugs