This part is a cover for a Meanwell SP320-series psu. I used it for the SP320-24 psu of my DIY 3D Printer.
The Cover also fits for a lot of similar chinese psu.
The cutout feeds e.g. for the Clear C14-320 connector/switch unit:
You also can download my Fusion360-file for modifying the part for your own requirements from the following url: https://a360.co/2HB6r9A
Category: 3D Printer Parts
The author marked this model as their own original creation. Imported from Thingiverse.