What is PCI Express? Do PCIe lanes, slots, and versions matter?

Here is something I recently found out I have tired this and it works You can use a PCIe x1 card, or a PCIe x4 card in a PCIe x16 slot

IF your mobo is out of warranty just cut the back part off the Pci-E X1 slot and the card will fit without seriously messing up the mobo or

pcie 4 card in pcie 3 slot A PCIe slot can support from 1 to 16 lanes Standard PCIe slots include 1, 2, 4, 8, and 16 lanes called PCIe x1, x2, x4, x8, and x16,

pcie 40 in 30 slot It is important to note that PCIe slots are not backwards-compatible, meaning that a PCIe x16 device cannot be used in a PCIe x1 slot, for example However