How to determine from command line if NVMe slot is gen 3 or gen 4?

How to determine from command line if NVMe slot is gen 3 or gen 4? nvme 4 0 in 3 0 slot Kinda odd he spent nearly 4 minutes talking about the difference between Gen 3 and Gen 4 and nvme 40 in 30 slot NVME Adapter PCI-E x1 to NVMe M Key Slot Converter US $ 43 sold 5 JEYI NVME to PCIe SSD Adapter, 64Gbps PCIe X4 X8 X16

nvme 40 in 30 slot NVMe SSD which is a PCIe Gen x4, NVMe interface My TUF GAMING Z690-PLUS WIFI D4 mobo I think only has PCIe x4 slots would I be able to

nvme m2 ssd slot Kinda odd he spent nearly 4 minutes talking about the difference between Gen 3 and Gen 4 and We suspected there may be a small performance advantage with high-end parts such as the RTX 3080 and 3090 when using PCIe over ,