Original Model was a great a Starting Point, so thanks for that great work @MCTazMan!
 

But I needed some changes…

1. Changed the model to a smaller and taller one, for a minimum usage of Filament. The M1 is not that heavy system. ;-)

2. Turn the Mac with the ports to the bottom, to prevent dust at the interfaces. Therefore only the 2 support noses had to be replaced and resized a bit. Fits perfect for a M1 Mac Mini from 2020. All Ports are still usable and the cooling slot is still free and everything is working fine since 2 weeks now. (see my final picture from below)

3. Changed the Design to multiple parts, to be able to print without support

4. Added 4 washers to add some space to the wall, but these parts are optional to print.