Does any PCIe slot support NVMe SSD's automatically or do I need

Install PCIe cards in your Mac Pro pcie expansion slot Anyone using PCIe expansion on a Mac Studio? Thread I don't have one but I doubt the enclosure has a 700MBs cap on each PCI slot pcie m2 slot It is possible to accomplish something like this with a PCIe bridge chip but mechanically this kind of arrangement using an ordinary PCIe slot

pcie slot function It is possible to accomplish something like this with a PCIe bridge chip but mechanically this kind of arrangement using an ordinary PCIe slot