Hp z640 NVMe PCIe Crucial card on PCIe expansion car

Can I Connect a x4 PCIe board into an x16 PCIe Slot? - NI pcie 4 card in pcie 3 slot Two types of PCIe slot on an Asus H81M-K motherboard Various slots on a computer motherboard, from top to bottom: PCI Express x4; PCI Express x16; PCI Express pcie 30 x1 slot Some tests suggest that even running games in 4K with current graphics cards won't saturate the bandwidth of a PCIe x16 slot There may be minor FPS

pcie 4 card in pcie 3 slot Like USB, PCIe is forward compatible This means that a device which requires PCIe will work in a PCIe or PCIe slot Slot Size Lane Width