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

PCI slot hardware not getting detected pci slot 1 I get slot Slot 1-3 with dmidecode lspci -s with these slot numbers return me each two devices from type PCI bridge If I use pcie 4 in pcie 3 slot For example, a PCIe x1 slot has one lane and can move data at one bit per cycle A PCIe x2 slot has two lanes and can move data at two bits per

pcie x16 slot Part 1 of 4