What is a NVMe SSD and How Fast is it?

My small Kingston A2000 drive works and boots in either nvme slot The P3 works only in the first slot I've checked

The NVMe PCIe card allows you add PCI-e NVME SSD to your motherboard without slot, perfect solution for PC upgraded 【APPLICABLE

pcie 50 slot The NVMe drives don't fit in the slot You have to use a PCIe adapter Consequently you are limited by the number of PCI slots, but I'm not

pcie slot function 2 SSD on the right side of the memory module, you can use a NVMe SSD in the slot and secure with the screw 0