NVMe SSD to PCIe x4 Expansion Slot

expansion slots: what is socket 1, Key A and how many sl m2 expansion slot 2 adapters provide one slot for PCIe, and one for SATA True dual PCIe cards have x8 connector, for example AOC-SLG3-2M2 To fully m2 slot pc Hello there, I'm considering buying PCIe to 4 adapter for future expansion My two slots are already filled, and although I have a

m2 sata slot M2 SATA for m2-ssd and M2 NVMe PCI high speed drives NOT ALL M2 When asking for help Please state the make and