On this pageThinkSystem SR850 V4/SR860 V4 E3.S 4x1T Backplane Option Kit PN4XH7B08876 ThinkSystem SR850 V4/SR860 V4 E3.S 4x1T Backplane Option Kit | Lenovo Server OptionsSee this document for information about the ThinkSystem SR850 V4/SR860 V4 E3.S 4x1T Backplane Option Kit.Learn More ThinkSystemSR850 V4 OS Support MatrixOS IndependentOS Independent ThinkSystemSR860 V4 OS Support MatrixOS IndependentOS IndependentGive feedback