PCI Express x4 network card into PCI-Express x16 slot?

PCI Express x4 network card into PCI-Express x16 slot? x16 slot PCIe cards can always operate in PCIe slots with the same or more lanes than the card For example, an x8 card can operate in a slot with x8, x16, or x32 lanes x16 slot Have you ever thought if you can plug PCI Express cards into x16 lane slot? In this video, we

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

aztec clusters slot PCIe cards can always operate in PCIe slots with the same or more lanes than the card For example, an x8 card can operate in a slot with x8, x16, or x32 lanes  AMD B550 Ultra Durable Motherboard with Digital VRM Solution, PCIe x16 Slot Ultra Durable™ PCIe Ready x16 Slot; Dual Ultra-Fast NVMe PCIe