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

Pci Slot - pcl 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 pcle x1 slot Examples of expansion slots include the peripheral component interconnect slot PCI Express serial bus slot, and the PCI-extended slot 9

pcl slot Hardware recommendation: Micro PC with PCI slot Building an unraid server and would like to find a micro system with multiport esata, but I