This is a simple stand designed to hold an Amstrad CPC 464 computer in a vertical position on a shelf, table, or similar surface. Print two in your choice of filament (PLA is perfectly strong!) and you're good to go. I added some thin rubber strips on the bottom to stop it sliding around, but not at all essential as they're very stable in use.
I assume it would work with the Schneider 464 as well, but I don't have one to test with.
No supports needed, print laying flat on the side with recommended 20% infill and 3 or more walls.
Thanks to @AndreToschlag_373636 for the original model which I borrowed the tricky dimensions from!
The author remixed this model.
Converted from the original, which sits on top of a monitor, to a version which sits on a flat surface. Slightly shortened the front lip as it was touching the keyboard in some places on my CPC.