16 CHAPTER 1: INTRODUCING THE SWITCH 4500G FAMILY
7-segment 
digitron 
display
Unit POST 
running
Green, 
blinking
The POST ID of the in-process 
test is displayed.
POST failed Red, blinking The POST ID of the failed test 
blinks.
Loading 
software
Green, 
blinking
A light bar rotates clockwise 
around the display during the 
loading procedure.
Fan failure Red, ON An “F” is displayed.
Overtemper
ature alarm
Red, ON A “t” is displayed.
Cluster 
status
Green, ON A “C” is displayed if there is a 
command switches.
An “S” is displayed if there is 
a member switches.
A “c” is displayed if there is a 
candidate switches.
A “1” is displayed when the 
switch operates 
independently. 
PoE mode Green, ON Show the utilization of the 
power
Table 4   Switch 4500G PWR 24-Port and 48-Port Front Panel LEDs 
LED Label Status Description
 
0 - 20% 
21 - 40% 
41 - 60% 
61 - 80% 
81 - 100%