Have you looked at this topic? A Neverending Story: PCIe 3.0/4.0/5.0/6.0/Sci-Fi+ | Bifurcation, Adapters, Switches, HBAs, Cables, NVMe Backplanes, Risers & Extensions - The Good, the Bad & the Ugly - Will there be a final solution? - #988 by aBav.Normie-Pleb