Explaining PCIe Slots

In ASUS 「PCIe x16 Slots - 7」

Identifying Different Types of PCIe Slots

pcie 4 m2 in pcie 3 slot For instance, you might have to disable a 3rd party SATA controller or secondary ethernet controller to activate a 3 pcie x16 slot One of

pcie x1 slot function if the slot is open like that, you should be good to go if it's not open, you could a) use another riser to adapt the x8 to x16, or b)