ASUS HYPER PCIe x16 Gen 4 NVMe Card with 4x Slots

What is PCIe? Understanding PCIe Slots, Cards and Lanes m2 pcie 4 0 in 3 0 slot PCIe card slot, , and NVMe drives work on high-end parallel PCIe — the PCI Express standard current generation — has a m2 nvme slot My laptop has a gen 3 slot First of all, I know that a PCIe 4 SSD NVMe will be running at gen 3 speeds and bottlenecked by the PCIe 3 slot But

m24 slot PCIe gen 3 and PCIe gen 4 generally have the same loading time for windows However, how data is read and written between the two might be a lot