iiNo display on the configuration terminal ························································································ 31Symptom ························································································································· 31Solution ··························································································································· 31Garbled display ······················································································································· 31Symptom ························································································································· 31Solution ··························································································································· 31Appendix A Chassis views and technical specifications ·························· 32Chassis views ························································································································· 32S6520-42QF-EI················································································································· 32S6520-48S-EI ··················································································································· 33S6520-52QF-EI················································································································· 34Technical specifications············································································································· 35Appendix B FRUs and compatibility matrixes ······································· 37Power modules ······················································································································· 37Fan trays ································································································································ 37Appendix C Ports and LEDs ····························································· 39Ports ····································································································································· 39Console port····················································································································· 39Management Ethernet port ·································································································· 39USB port ························································································································· 39SFP+ port ························································································································ 40QSFP+ port ······················································································································ 41System status LED ············································································································ 43SFP+ port LED ················································································································· 43QSFP+ port LED ··············································································································· 44Management Ethernet port LEDs ·························································································· 44Appendix D Cooling system ······························································ 45Index ··························································································· 46