Does my mother board has pcie x4 slot?

In this video, I tested the PCIe gen 3 slots to see if there is any performance difference when

moving from pcie x4 lanes to pcie would still be 4 lanes ) PCIe x4 slot and it is working absolutely fine It will run in PCIe

pcie slot configuration gen1 gen2 gen3 Computer bus interfaces provided through the connector are PCI Express x4 , Serial ATA , and USB (a single logical port for each of

pcie 4 ssd in pcie 3 slot moving from pcie x4 lanes to pcie would still be 4 lanes ) PCIe x4 slot and it is working absolutely fine It will run in PCIe