At work we use a number of the Decimator.com Video adapters. Regular practice is to use Velcro to mount them on a wall or in a case. But people with 3D printers can do better!

This will fit a few models with the same case...
MD-Cross, Decimator-QUAD, MD-HX, DMON-QUAD should all fit.

The model requires a little bit of flex for the Box to slide in, I used Matter Hacker Pro-Nylon and it works great for this.

I Printed this flat, no supports needed.

Counter sunk holes for using wood screws to mount.