'Half-Length' PCIe Slot Makes No Sense: PC Talk Forum

I have 2 x16 pcie and 4 x1 slots I have 2 x8 cards in the x16 slots, but need basic display adapter functionality for debian xfce

PCIe boards can fit into slots designed for their lane configuration or higher Plugging a x4 PCIe into a x16 slot is acceptable

pcie training error slot 1 Identifying Different Types of PCIe Slots

pcie slot function By you sticking a UAD-2 card into the second slot, the motherboard detects this and automatically throttles the first slot down to 8x assuming you have stuck in