How to tell what version of PCI Express slot your system has?

In this video, I talk about the different types of PCIe slots and what their uses are There are

Using lspci -vvv I can get the PCIE slot numbers of these 4 cards But how to match the PCIE slot number with the device name? For example one

pcie slot PCI Express is a computer expansion card standard and is used most often for video cards PCIe is intended as a replacement to PCI

pcie slot configuration gen1 gen2 gen3 Using lspci -vvv I can get the PCIE slot numbers of these 4 cards But how to match the PCIE slot number with the device name? For example one