Will PCIe x1 x4 cards work in x16 slot?

You'll be able to do more with less in this case, since a PCIe x8 slot can handle almost exactly what a PCIe x16 slot can currently

In ASUS 「PCIe x16 Slots - 4」

1_24 slot car track Pcie lanes get shared in a predefined manner Enterprise motherboards often allow decent control over this Even to allow a x16 lane to be

1234 pg slot What are the standard PCIe sizes? · PCIe x1 · PCIe x4 · PCIe x8 · PCIe x16