How to Enable a PCI Express Card Slot - Small Business -

Fortunately, you typically only need PCIe x4 slots for the majority of expansion cards, with x16 and x8 being generally reserved for graphics cards To learn

The Matrox PCI and PCIe technology guide explores the importance of evaluating different slot types when buying add-in graphics cards

pcie 3 slot if the slot is open like that, you should be good to go if it's not open, you could a) use another riser to adapt the x8 to x16, or b)

pcie 4 slot Bizarre issue with fitting the GPU into the PCIe slot · remove the backplates from other slots · check the spacers between mobo and case · fit