A quick guide on how to make your own IO-cover
IO shield, most useful thing I’ve made so far
Needed a custom IO shield for my JBOD, 3D printed one.
Custom or painting, I/O shield? - PCPartPicker
I converted a Supermicro CSE-826 into a simple DAS and found myself in need of a custom IO shield. I purchased a SuperMicro CSE-PTJBOD-CB3 (yes, I know there are other, cheaper options - I wanted this one) to run the fans/BMC/power and it had a network port for remote management.
To keep things clean and modular, I wanted the ethernet port accessible externally, so I 3D printed a custom IO shield with a patch panel to snap a keystone into.
https://imgur.com/a/bNuJwIE
Really pleased with how it turned out. Thinking about printing again with some adjustments (the shield is slightly too small, so it doesn't snap into place, hence my janky brackets). But overall, a functional and clean look.
If anyone needs something similar, I obtained the STL files on Thingiverse.
Patch panel (I designed a 1x1): https://www.thingiverse.com/thing:1741072
Blank IO Shield:
https://www.thingiverse.com/thing:2883646
As an aside: WOW you can make this chassis quiet with some cheap mods. Swap that PSU for the SQ version (cheap on ebay) and swap the fans for Supermicro FAN-0074L4 (a little bit of cutting required to make it fit). It's all near dead silent now instead of the jet engine it was before.