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

You can install PCI Express slots in larger slots but not smaller ones For example, you can install a PCI Express x1 adapter into an x16 slot (but will

It's a slot of x16 size but electrically x4 This

pcle x1 slot Most recent PC's motherboards have PCIe slots just for PCIe cards to be installed in the corresponding PCIe slot (The slot is as wide as or

pcle x16 slot Also, PCI slots are the same sizes for all devices PCIe slots differ depending on which form factor it accepts The longest would be the 16-lane slot and, the