MX500 2.75L case
Asrock B350 ITX
2x8gb HyperX 2400mhz
Generic "120W" Plugin DC Board
Meanwell EPP-200 openframe AC-DC board
The only thing special is I wired the EPP-200 meanwell PSU inside the case. I checked the measurements online for this case and picked it for the general aesthetics and the likelihood of me being able to cram the AC-DC PSU in there. It did take me to design and print a custom mount for the PSU it works great. I'm using the C8 connector since I can fit it without any modifications. It's not safe as grounding it though so I wouldn't do what I did unless you're willing to take risks.
I can still clean it up a bit more if I get rid of the 2.5" but it fitnicely off to the side. I'm not using the bracket because I want the most airflow I can get.
Currently running at stock specs