I thought it about time I show off the print server that I have been using for some time with my 3D printer.
Before this I had to keep a computer plugged into the printer all the time and it was a hassle to unplug everything to move the printer about.
The two cables coming out are both power. Jobs are sent to the printer over Wi-Fi from my Laptop.
Today I sliced a model and started printing up in the spare room while sitting eating dinner downstairs.
Or the README for technical detail: https://github.com/greenarrow/matterQ
Tested with Ultimaker + Marlin.