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

NVMe vs vs SATA vs PCIe: What are these SSDs? m2 sata vs nvme slot 2 or you want extra NVMe data storage you can purchase a PCIe to expansion card to add an additional Slot to your PC ATX motherboards have ample m2 pcie slot 2 drives SATA and NVMe drives both adhere to the NGFF standard, so in terms of physical compatibility, they share the same form factor

m2 slot types The communication drivers and interface between NVMe and SATA are completely different as SATA uses AHCI drivers that are designed for hard disk drives