On this pageThinkSystem SR250 Series 4x3.5" Hot Swap SAS/SATA Backplane Kit PN4C57A81454 ThinkSystem SR250 Series 4x3.5" Hot Swap SAS/SATA Backplane Kit | Lenovo Server OptionsSee this document for information about the ThinkSystem SR250 Series 4x3.5" Hot Swap SAS/SATA Backplane Kit.Learn More ThinkSystemSR250 V2 OS Support MatrixOS IndependentOS Independent ThinkSystemSR250 V3 OS Support MatrixOS IndependentOS IndependentGive feedback