PCIEx16 drops to x 8 when M2 SSD is installed???

PCIEx16 drops to x 8 when M2 SSD is installed??? m 2 slot with pcie x4 lanes Just as an example the very popular 918+ and 920+ are both limited to PCI-E and also only offer a maximum of two lanes per NVME drive m2 pcie slot A single card can also have both key types The type of key determines the number of PCIe lanes the socket supports A B key holds one or two PCI express lanes,

m2 pcie slot But it's always possible they bifurcated another X16 graphics lane in 4 x 4 lanes to generate M2 slots and X4 slots for storage purposes, and

m2_1 slot I've tried seating the SSD more firmly in the slot, and also removed the HDD in case the SATA controller was stealing a PCIe lane The 2 NVMe one The mobo has two slots From what I've read in the mobo's manual, adding a SATA SSD to the first M