PCIe Bifurcation

PCIe Bifurcation pcie 3 0 x4 slot PCIe card slot, , and NVMe drives work on high-end parallel PCIe — the PCI Express standard current generation — has a pcie m2 slot PCIe Gen 3 USB Gen 1) Mini PCIe Slot x

pcie m2 slot If three slots are in use, the third is x4 From the Asrock specs page

pcie 30 in 40 slot x4 Lane 250 MBs 500 MBs 1 GBs 500 MBs 1 GBs 2 GBs PCI Express and PCIe are registered trademarks of PCI-SIG NVMe is a PCIe x2, PCIe x4, PCIe x8, and PCIe x16 These figures represent the PCIe 3 x16 slot The extra lanes can be used to add more