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

gpu slot types   Dan gpu slot size

A dual slot GPU will take up two slots on the motherboard and case These graphics cards are most likely to be longer and wider compared to

x1, x2, x4, x8, x16, and x32 A PCIe card will fit into a slot of its size or bigger, but not into a smaller PCIe slot The number of lanes actually connected activate-h100 The NVIDIA H100 card is a dual-slot inch PCI Express Gen5 card based on the NVIDIA Hopper™ architecture It

axa slot slots to PCIe address For example: Handle 0x001D, DMI type 9, 17 bytes System Slot Information Designation: J6B1 Type: x1 PCI Express From what I gathered in my motherboard's manual, both PCI 1 and PCI 3 slots are PCIe x16 slots, which seems to match my GPU