What is a PCIe slot?

PCI-Express is defined as serial IO point-to-point Here, PCI-Express complements InfiniBand by upgrading PCI slot performance and offering

If you run dmidecode it will show the stored platform information, which will tell you the mapping of physical slots to PCIe address

pcie gpu slot In the case of PCIe x16, there are 16 data lanes in the slot Each data lane is capable of bidirectional data transfer, meaning data can flow in both directions

pciex1_1 slot PCIe expansion slot definitions ; 2 PCIe HL, HH · x8, 8, 4, 1 ; 3 PCIe HL, HH · x16, 16, 8, 4, 1