The board should work with smos. All the riser free mobos from china really suck with windows.

the six pin are designed to clean up wiring.

1in 1out
2in 2out
3in 3out
4in 4out
5in 5out
6in 6out.

the in comes from you psu the out goes to gpu.

these are server based

not atx based.

I have a few

running with smos.

windows will drive you nuts 🥜