Raspberry PI Multi Rack

This is 4x Raspberry Pi Holder with the ability to swap and power from within the case. I have looked and tested around and the model works with all standard raspberry pi's. YAY. I have been successful in mounting a raspberry pi 3b, and a libre compute board (le potato), as they all use the same mounting and size dimensions. NOW UPDATED FOR RASPBERRY PI 4 AND 5! I have also included links for used hardware at the end of the description. I have made mounts and parts to hold the USB power supp