PCIe Speeds and Limitations

You could try setting the bios to bios mode or UEFI mode You might also try playing with the Slot Disablement settings in the BIOS>Integrated

Anything A pcie 4 x1 slot is a whole lot of bandwidth and could be used for any pcie card with minimal real world bottleneck GPUs would be

pcieslot The size represents the number of direct connections provided by either a PCIe slot or card PCIe x1; PCIe x4; PCIe x8; PCIe x16 These

pcie slot configuration gen1 gen2 gen3 PCIe x1 slot can support all types of wireless cards, including the latest Wi-Fi 6 protocol However, a PCIe x1 slot can only support 1 Gigabit