PCIe vs PCIe : What's the difference?

Compatibility of PCIE bifurcation between Hyper pcie 4 m 2 in pcie 3 slot Faster readingwriting speed compared to the TF card slot of Raspberry Pi , greatly improving readingwriting efficiency of the system or files, Supports pcie cem slot PCIe doubles the throughput rate per lane, giving users a transfer rate of up to 64GBs Why does this matter? The faster the throughput

pcie 20 x1 slot 1 PCIe x16, 1 PCIe x16, 1 PCIe x1, 1 Key E for WiFi Hyper socket that supports PCIe Gen4 x4 while socket is capable of