Does any PCIe slot support NVMe SSD's automatically or do I need

NVMe Device Specifications and Upgrade Requirements m 2 nvme slot on motherboard 2 slot Even if your motherboard doesn't have an port, an drive can still be connected using an adapter card that fits a m2 pcie slot Not all motherboards support both types, it depends on the age of the motherboard in most cases ON your board, the slots support both SATA

m2 sata slot On my motherboard, one NVME slot goes to the CPU ,two slots are off the chipset, and one slot can take either an M