How to tell what version of PCI Express slot your system has?

How to tell what version of PCI Express slot your system has? pci e 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 4 nvme in pcie 3 slot The more lanes it has, the longer the interface Generally, long slots are compatible with short interface products For example, PCIe X16 slot

pcie 4 nvme in pcie 3 slot PCI is a parallel interface whereas PCIe is a serial interface PCI uses individual buses for each of the devices connected to it instead of a shared one like

pcie training error slot 1 For instance, on supported systems a PCIe x16 slot can be configured into two PCIe x8 lanes, or more smaller lanes, depending on what the Another difference between PCI and PCIe is that PCIe slots come in different versions, depending on the maximum number of lanes that can be