Can you use a PCIe 16x card in a PCIe 1x slot?

How To Add More PCIe Slots? pcie x1 in x16 slot Magewell PCIe cards use PCIe interfaces and above Computer motherboard may have PCIe slots compatible with x1, x4, x8 and x16 When you need to connect pcie 40 in pcie 30 slot Yes any pcie xanything card will work in a x16 slot, i have a pcie x1 asus xonar stx in a 16x slot right now x4 and x8 cards will also work in

pcie 4 gpu in pcie 3 slot I cut open the back of a x1 slot on my motherboard to allow me to fit a full size GPU