USB PCIe card in x16 slot?

What is PCIe x16 Slot pcie slot x16 The only time the GPU x16 slot will drop down to x8 mode is if you install another card in the second PCIe x16 slot ( another GPU or a PCIe pcie2 slot Product Overview · This PCIe x1 to PCIe x16 Slot Extension adapter provides enhanced compatibility between motherboards and a variety of PCI-Express expansion

pcie gen 4 in gen 3 slot I explain in this video what is PCIe x16 on the motherboard and its uses I also explain what