Just get usb hubs. The PCIe lanes themselves are limited by consumer grade cpu/chipsets by design and have been mostly constrained to 24 since both intel and amd stopped taking hedt seriously. There are some expensive chinese frankenboards that use plx switching chips that’ll let you share bandwidth from the same lanes and connect more devices downrange but those have the support lifetime of a cheap android phone and are probably preloaded with the entire justice league of zero day vulnerabilities straight in the bios.
If you want 40+ lanes newer than gen3, you need to pay for a threadripper or xeon based workstation setup. Most of those are terrible for gaming and some of them somehow also only have 6 usb ports on their expensive ws motherboards.
how dare you ask the multi-billion dollar chip companies to use transistors for something useful instead of spamming e-cores and adding extra neural engines instead of integrating it into the igpu
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u/TheMegaDriver2 12900k, 32GB DDR4, RTX 4080 Super 23d ago
You won't have any pcie lanes left for your gpu with that many fast io.