This is a mounting tray for the Hypex NC122MP and NC102MP. The tray that I got with my NC122MP had fixed standoffs that interfered with the NC102MP layout. This design uses threaded inserts for attaching standard M3 standoffs used in computers, so they can be added/removed as needed to support NC122MP and NC102MP.
This was designed to use the following heat-set threaded M3 inserts:
https://www.mcmaster.com/94180A333/
I am also working on a full enclosure design and will be posting that when complete.