PCIe x16 Slots

Can I Connect a x4 PCIe board into an x16 PCIe Slot? - NI 1 x pcie 4 0 x16 slot PCIe can handle 40Gb Ethernet with an 8-lane configuration, and can handle 100Gb Ethernet with a x16 PCIe vs : 1 dollar slot machines According to the spec sheet it does supports PCie 1 x PCIe x16 slot Source: Link above

178 slot 2 slots with x4 PCIE lanes each