I have a MPSM and recently printed out front and back vesa mounts. I use Octopi running on a RPi2, and wanted to be able to turn my printer on and off remotely from the webpage. I purchased this relay, and wanted to be able to mount it under my Pi, on the back of my printer.
Any questions feel free to shoot me a message!
Full tutorial on how to put this project together on my website. The tutorial details all the materials, and steps to have a fully functional remote on/off printer with Octopi. I make an outlet just for the printer to be switched, so you don't have to cut or modify your original power supply cord.