GPU in PCIEX4 instead of x16

‎Aurora R13, PCIe x4 slot not working? pciex4 slot 3 It's a slot of x16 size but electrically x4 3 bet slot Slot PCIe x16 e conectores com liberação rápida e design sem parafusos

sbc4d slot login slot Chipset: - 1 x PCI Express x16 slot, supporting PCIe and running at x4