ii 
Configuration terminal display problems ·········································································································· 34 
No display ················································································································································ 34 
Garbled display ········································································································································ 34 
Appendix A Chassis views and technical specifications ······························· 36 
Chassis views ·················································································································································· 36 
HPE 5901AF 48G 4XG 2QSFP+ Switch ·································································································· 36 
Technical specifications ··································································································································· 37 
Appendix B Removable components ··························································· 39 
Removable power supplies ······························································································································ 39 
Removable fan modules ·································································································································· 39 
Appendix C Ports and LEDs ········································································ 41 
Ports ································································································································································· 41 
Console port ············································································································································· 41 
Management Ethernet port ······················································································································ 41 
USB port ··················································································································································· 41 
SFP+ port ················································································································································· 42 
QSFP+ port ·············································································································································· 44 
10/100/1000BASE-T autosensing Ethernet port ······················································································ 46 
LEDs ································································································································································ 47 
System status LED ··································································································································· 47 
Management Ethernet port LEDs············································································································· 47 
10/100/1000BASE-T autosensing Ethernet port LED ·············································································· 47 
SFP+ port LED ········································································································································· 48 
QSFP+ port LED ······································································································································ 48 
Fan module status LED on the fan module ······························································································ 48 
Appendix D Cooling system ········································································· 49 
Document conventions and icons ································································ 50 
Conventions ····················································································································································· 50 
Network topology icons ···································································································································· 51 
Support and other resources ······································································· 52 
Accessing Hewlett Packard Enterprise Support······························································································· 52 
Accessing updates ··········································································································································· 52 
Websites ·················································································································································· 53 
Customer self repair ································································································································· 53 
Remote support ········································································································································ 53 
Documentation feedback ························································································································· 54 
Index ············································································································ 55