iiConfiguration terminal display problems ························································································ 40No display························································································································ 40Garbled display ················································································································· 40Appendix A Chassis views and technical specifications ·························· 41Chassis views ························································································································· 41S6820-32H ······················································································································ 41S6820-56HF····················································································································· 42S6820-4C ························································································································ 44Technical specifications············································································································· 45Appendix B FRUs ··········································································· 47Power modules ······················································································································· 47Fan trays ································································································································ 48Expansion cards ······················································································································ 48Appendix C Ports and LEDs ····························································· 50Ports ····································································································································· 50Console port····················································································································· 50Management Ethernet port ·································································································· 50FE SFP modules ··············································································································· 51USB port ························································································································· 51SFP+ port ························································································································ 51SFP port ·························································································································· 53QSFP28 port ···················································································································· 53QSFP+ port ······················································································································ 56SFP28 port ······················································································································ 56LEDs ····································································································································· 58System status LED ············································································································ 58QSFP28 port LED ············································································································· 58SFP28 port LED ················································································································ 58SFP+ port LED ················································································································· 59SFP port LED ··················································································································· 59Management Ethernet port LEDs ·························································································· 59Fan tray alarm LEDs ·········································································································· 60Appendix D Cooling system ······························································ 61Index ··························································································· 63