On this pageThinkSystem SR645 V3/SR635 V3 EDSFF E1.S Gen4 5.9mm Backplane Kit PN4XH7A87598 ThinkSystem SR645 V3/SR635 V3 EDSFF E1.S Gen4 5.9mm Backplane Kit | Lenovo Server OptionsSee this document for information about the ThinkSystem SR645 V3/SR635 V3 EDSFF E1.S Gen4 5.9mm Backplane Kit.Learn More ThinkSystemSR635 V3 OS Support MatrixOS IndependentOS IndependentGive feedback