1-13
LED
Mark
Status
Description
Steady yellow
The RPS input is normal, but the AC input fails or
is not connected.
S5500-52C-SI)
Off
RPS is not connected.
Steady green
The RPS input is normal, and the AC input works
normally.
Steady yellow
The RPS input is normal, but the AC input fails or
is not connected.
RPS status LED
(S5500-28C-PWR-SI
and
S5500-52C-PWR-SI)
RPS
Off
The RPS input is abnormal.
Port Mode LED
The port mode LED on the S5500-SI series can display the working status of a port for you to obtain
more device information. You can use the port mode switching button to change the status of the port
mode LED.
Table 1-10
Port mode LED description
LED
Status
Description
Steady green
Indicates port rate.
Flashing green (1 Hz) (supported by
PoE switches only)
Indicates port PoE power supply.
Mode
Steady yellow
Indicates port duplex mode.
Seven-Segment LED
The seven-segment LED and the system status LED together indicate the operating status of the
device. For details, refer to
Table 1-11
.
Table 1-11
Seven-segment LED description (1)
Status
LED
System status
LED
(PWR/SYS)
Seven-segment LED
Description
Flashing green
The LED displays the specific numbers
one by one.
POST running. The LED
displays the POST test ID.
Flashing red
The LED flashes the specific numbers.
POST failed. The LED flashes
the POST test ID of the failed
test.
Unit
Flashing green
A bar rotates clockwise around the
LED.
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