Why does this PC fit into a PCIe slot? #SHORTS #pcbuilding

Why do video cards have a trimmed PCIE pin short pcie slot 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 short pcie slot PCIe: Universal interface for many computer components The Peripheral Component Interconnect Express interface — PCI Express or PCIe for short

super wheel slot machine height, full-length dual-slot PCIe card For details refer to the NVIDIA Form Factor for Server PCIe Products Specification (NVOnline