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

Select the Right PC for Your PCI Express Hardware pci slot 1 slot i use, pcie slot sizes Time Stamp pcie gpu slot 22802242 M-Key x 2, 30423052 B-Key x 1 + Micro SIM Slot x 1, Mini PCIe x 1 + Micro SIM Slot x 1 PCI Slot x 3 30423052 B-Key x 1 (PCIe

pcie 4 m2 in pcie 3 slot My MOBO has a PCI slot and I want to I also don't need more external ports , and have no use for sound cards 1 2 1