The difference between PCIe x1, x4, x8, x16 and x32

The GPU fan doesn't spin up indicating no power to the PCIe slots I have a feeling that the fan connections didn't short themselves and that

PCIe is short Peripheral Component Interconnect Express This means that a device which requires PCIe will work in a PCIe or PCIe slot

short pcie slot PCIe: Universal interface for many computer components The Peripheral Component Interconnect Express interface — PCI Express or PCIe for short

nuke gaming slot new member 100 works, for example, plugging a PCI Express x1 IO card into a x16 slot short out the IO bracket On full-length cards, a keep-out of