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

Is it okay to put Gen 3 SSD in my motherboards Gen 4 pcie slots? nvme gen 4 in gen 3 slot Buy Transcend 512GB SSD NVMe PCIe Gen3 x4 110S, Solid State Drive, 2280, Sequential ReadWrite up to 17001400 MBs TS512GMTE110S online at low price in nvme vs m2 slot difference Gen3, Windows boot time, games launch time, File copy NVMe Gen 3 vs NVMe Gen 4

nvme gen 4 in gen 3 slot Computer will simply BSOD in any graphically demanding game if the NVME M2_1 is set to PCIE GEN 4 As a temporary fix I have to set NVME M2_1 in