This is a mount I designed to fit a Raspberry PI 4 into my case (for PIKVM).
It's a pretty tight fit. It barely clears the headers of the motherboard and I had to use a right angle usb-c cable to get the usb to connect to the PI.
This requires two 3mm heat set inserts for the bottom holes, and self taping 2.5mm screws for the PI.
The author marked this model as their own original creation.