NVMe vs vs SATA vs PCIe: What are these SSDs?

Understand default PCIe slot behaviour with Dual NVMe PCIe adapter slot 2,3,4,5,6 and 7 respectively However, the CPU socket only has

There's no NVMe SSD designed to use more than 4 lanes of PCIe Those are just NVMe to PCIe slot adaptors so technically it is

nvme and m2 slot difference PCIe when looking at NVMe SSDs With the previous generation, the maximum bandwidth available on an slot with its four PCIe lanes

nvme vs m2 slot difference First of all, I know that a PCIe 4 SSD NVMe will be running at gen 3 speeds and bottlenecked by the PCIe 3 slot But I'm wondering if there are