Resolved* PCIE x16 slot stuck at x1 mode while gaming

You can place a PCIe 1x card into any available PCIe slot and it will work

So, there is no singular PCI Express slot There are actually four sizes : PCI Express x1, PCI Express x4, PCI Express x8, and PCI Express x16

pcie slot dimensions 1 additional PCI-Express x1 slot is needed

pcie slot height I explain in this video what devices PCIe x1 slots are used for on a motherboard I also attempt