Di3 backplate for 80mm fan

Designed to replace the original backplate assembly, this is my take using an 80mm fan.

This is the biggest fan that you can fit alongside the power connector and a switch, and without having to make the box any longer (like with any backplate for a larger fan).

Uses a standard IEC socket, and a standard/common 13x20mm switch, with at least a 10A AC current rating (as that is the maxium the plugtop fuse should be on any IEC lead!).

Hardware-wise you should only need either 2x short self