Precision 7740 - PCIe Interface 3rd Gen or 4th Gen?

Riser Cards and PCIe Slots pcie 4 0 in 3 0 slot On the surface, newer PCIe slots look the same as They also feature both backward- and forward-compatibility: not only can you connect a PCIe SSD to a pcie slot pinout 3 x slots and 4 x SATA 6Gbs ports* Intel® CoreTM Processors _1 slot , type 224222602280

pcie 50 x16 slot Yes, you can use a PCIe graphics card in a PCIe slot PCIe slots are backward compatible with PCIe cards, meaning they can still work together