On this pageThinkSystem SR665 V3 x8/x8/x8/x8 PCIe Gen5 Riser 3/4 Option Kit PN4XH7A85888 ThinkSystem SR665 V3 x8/x8/x8/x8 PCIe Gen5 Riser 3/4 Option Kit | Lenovo Server OptionsSee this document for information about the ThinkSystem SR665 V3 x8/x8/x8/x8 PCIe Gen5 Riser 3/4 Option Kit.Learn More ThinkSystemSR665 V3 OS Support MatrixOS IndependentOS IndependentGive feedback