PCIE 1 to 3 PCI Express 1X Slots Card to External 3 PCI-e Slot

Pci Slot - pci e slot ✓ Mini PCIe to 3 PCIe 1x adapter expands 3 PCI express 1x slot via your motherboard with mini PCIe can use 3pcs PCI express card (Sound Card , Network pcie4 slot PCIe Gen3 provides 8 gigatransfers per second or effectively up to 984 MBs per lane so

pcie m2 slot is a form factor, there are a few variants for different applications, but the variant we are interested in for NVME SSDs is M key This