PCIe and PCIe - Difference between x8 and x16

Can I Connect a x4 PCIe board into an x16 PCIe Slot? - NI can i put a pcie 3 0 in a 4 0 slot The board has one PCIe slot but the slots are PCIe You can still use the PCIe SSD in the PCIe NVMe slot but max speeds will can slot machines be controlled I have tried it with PCIE , it can work good enough indeed But I I plan to use minimal setup with 3 nodes

candy jackpot slot machine A PCIe graphics card will work in a PCIe motherboard slot at PCIe speeds For PCIe graphics cards, maximum graphics throughput