B550M Pro4

With this AMPCOM NVMe SSD PCI-E X4 Adapter, you could add a NVME SSD on your motherboard without slot With the channel of PCI-E X4,

Yes beta version, the ssd 980pro is not detected by the motherboard in both slots, one and two, same with the previous bios version Click to

m2 slot pc 2 slots Some of those slots share PCI lanes with the PCIe slots In the one you mentioned it appears that the 3rd slot (M2C, likely means there

m2 sata vs nvme slot 2 motherboard slot at PCIe speeds PCI-Express versions are backward and forward compatible, meaning that you can use a PCIe storage