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

It Looks Like PCIe NVMe SSDs Require Bigger Slots what does an nvme slot look like Why do the edge connectors on modules look different? How do I know which card I need? The edge connectors are also called “keys ” what slot machines have the best odds of winning The NVMe Port has a total of 34 pins with a small port shaped like the image above, and because they are much smaller when compared to PCI

what denomination slot machine pays best 2 NVMe slots seem to share a single PCIe x4 uplink in the end, it's like some sort of total bandwidth limit However, I'm not sure