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

Does any PCIe slot support NVMe SSD's automatically or do I need m 2 nvme slot on motherboard 2 slots were common, it's not like SATA was super common and then NVMe came later, they came together and always coexisted some cheaper m2_1 slot 2 drives aren't connected to a motherboard via a cable, they're instead plugged directly into the motherboard using a dedicated connector

m2_1 slot Only if its a boot device or your intent is software raid, any most pcie adapter regardless of bios support will support an nvme data drive once

m2 pcie slot B650M-HDV · Build for The Most Advanced PC · Optimized VRM Design · DDR5 Memory with Protection Circuit · Reinforced Steel Slot  These are generally located between the graphics card and CPU or in one of the lower corners of your motherboard Those that do not have access