Cheers for that Nick, I did reply earlier but lost it when I hit accept your answer

Any way, I did try to find out what's been back ported but like you said it's not easy.

However, Good news for prospective Ryzen server owners!

I've just installed ClearOS on a spare SSD on my own system (3900x X570 board)

And every thing works ethnet ports/USB3 ect. All NVME/SSD drives detected fine. Even my Vega VII GFX card was deteted and used the AMDGPU module.

Also , the install took a minute and a half Ok minimum install I admit

Am now off to price up a suitable system. I really fancy a duel 64 core Eypc Rome Monster but........

Regards.