The IO Shield that comes with the X470D4U motherboard does not fit the SuperMicro SC512 series chassis. This solves that problem.
This was modelled with a SC512F-350B chassis.
You may need to slightly shave with a sharp blade the top and bottom to get it to fit depending on print settings and material used. You can also drill the two holes for the screws once you get the IO shield in place. Don't overtighten so you don't strip the plastic. I used Prusament ASA and it came out very nice.
The author hasn't provided the model origin yet.