This is a remix of thing:527334. I wanted the part that houses the inlet module to have nuts for a firm and durable mount. The screws on the side of my 24 volt PSU are 2 mm closer to each other, so that was another thing I changed. Use support material to print the inlet module. Both nuts have a tight fit. Get them in place by screwing in a bolt first, without the inlet part. They won't fall out once in place. About the PSU cover: I did not modify (or use) that part.