How can I check the NVME specs

How to determine from command line if NVMe slot is gen 3 or gen 4? nvme pcie slot
➡️【Mk.com】✅Step into our world-class casino, ✅Here is the most exciting gaming experience on the Gold Coast, blending old-school charm with modern style. ✅  2 NVMe slot requires 4 PCIe lanes, and as a result, the smallest one available requires a x4 PCIe slot Riser cards Riser cards function as nvme pcie 40 in 30 slot PCIe, is a standard interface used for connecting high-speed motherboard components while NVMe is the communication protocol or interface

nvme and m2 slot difference 2 slots — supporting both PCIe and — that allow you to expand your system with high-performance SSD storage Designed for the latest generation of NVMe