How to check PCI type and version of free PCI slot in Linux shell

How to check PCI type and version of free PCI slot in Linux shell pci e slot I theory, slots and PCI-E slots should perform the same PCI-E is faster than , making the physical limits of the drive speed to that of pcie 8x slot PCIe slots are typically used to add graphics cards and other high-performance cards to a computer system What is an AGP expansion slot? An accelerated

pcie 8x slot PCIe Gen3 provides 8 gigatransfers per second or effectively up to 984 MBs per lane so

pcie 50 slot PCI-e 1x slot That's fine, but how do I relate these outputs to deduce what PCI type and version are the free slots in my server? I PCIe stands for peripheral component interconnect express It is a standard for connection between the motherboard and peripherals The motherboard acts as the