How does lspci find out physical slot number of a PCI device?

A discrete GPU is a distinct chip that is mounted on its own circuit board and is typically attached to a PCI Express slot Integrated Graphics Processing Unit

On the motherboard, PCIe lanes appear in x1, x2, x4, x8, and x16 variations More lanes mean more bandwidth, as well as a longer slot GPUs are usually

gpu stuck in slot How to check PCI type and version of free PCI slot in Linux shell and I also know how to check what PCI type and version are all the slots in

gpu stuck in pcie slot Question Which types of PCI extension boards and PCI slots are available and which combinations of card and slot are possible? Answer