Table4-19 Power supply status LED description 
LED mark  Status  Description 
PWR1/PWR2 
Steady green 
A power supply is installed in the power supply slot, and the power 
supply is outputting power correctly. 
Steady yellow 
A power supply is installed in the power supply slot, but the power 
supply has failed or no power is input to the power supply. 
Off  No power supply is installed in the power supply slot. 
 
MODE LED 
To show more information about the switch through the port LEDs, the  S6520X-30QC-EI, 
S6520X-54QC-EI,  S6520X-30HC-EI,  S6520X-54HC-EI,  S6520X-30QC-HI,  S6520X-54QC-HI, 
S6520X-30HC-HI, and S6520X-54HC-HI switches each provide a MODE LED (MODE) to indicate 
the type of information that the port status LEDs are showing. 
You can use the mode button to change the indication of the MODE LED. 
Table4-20 Description for the mode LED 
LED mark  Status  Description 
MODE 
Steady green  The port status LEDs indicate port rates. 
Flashing yellow 
The port status LEDs indicates the IRF member ID of the switch. For 
example, if the LEDs for ports 1 to 5 are steady green and the other 
LEDs are off, the IRF member ID of the switch is 5. 
 
 
 
  In versions earlier than Release 6326 (not inclusive) or Release 65xx versions earlier than 
Release 6525 (not inclusive), the MODE LED changes in color and indication after you press the 
mode button and keeps that state until you press the mode button again. 
  In other versions, after you press the mode button, the MODE LED changes in color and 
indication and keeps that state for only 60 seconds and then turns steady green automatically. 
 
Management Ethernet port LED 
Table4-21 Management Ethernet port LED description 
Management Ethernet port LED (ACT/LINK) status  Description 
Steady green  A link is present on the port. 
Flashing yellow  The port is sending or receiving data. 
Off  No link is present on the port. 
 
SFP+ port LED 
Table4-22  describes  the SFP+ port LEDs on the  S6520X-30QC-EI,  S6520X-54QC-EI, 
S6520X-30HC-EI, S6520X-54HC-EI, S6520X-30QC-HI, S6520X-54QC-HI, S6520X-30HC-HI, and 
S6520X-54HC-HI switches.