Using a graphics card on a PCIEX4 slot

Aurora R13, PCIe x4 slot not working? So, this is following up on the Elgato 4K60 capture card not showing up when installed on the top

In the internal view #2 or #3, you can see the motherboard and there is no PCIe x4 slot From the Tab Expansion slots

freespin slot slot Chipset: - 1 x PCI Express x16 slot, supporting PCIe and running at x4

playstar slot slot, pcie x1 slot, pcie x4 slot, pcie x8 slot, which pcie slot to use, does it matter which pcie