How To Check PCIe Version of Slot and Motherboard

PCIe : Everything You Need to Know About pcie 3 0 x4 slot An x4 PCIe device has a theoretical max transfer rate of MBsec according to wiki pcie 50 slot For example, if you connect a PCIe expansion card to a PCIe slot, the card will perform to the PCIe specs PCIe Gen 4 offers

pcie x1 in x16 slot x16 PCIe slot supporting x8 PCIe Gen4 Key M slot with x4 PCIe Gen4 x4 + 3 x1 USB*, USB Type-C connector