1-11
LEDs
Table 1-6
LEDs
LED
Device support
System Status LED
All series
RPS Status LED
All series
Port Mode LED
All series
Seven-Segment LED
All series
10/100/1000Base-T Auto-Sensing Ethernet
Port Status LED
All series
1000Base-X SFP Port Status LED
All series
Interface Module Status LED
S5120-28C-EI, S5120-52C-EI,
S5120-28C-PWR-EI and S5120-52C-PWR-EI
System Status LED
The system status LED helps you determine the working status of the switch. Refer to Table 1-7 for the
details.
Table 1-7
System status LED description
LED
Status
Description
Steady green
The switch is started normally.
Flashing green (1 Hz)
The system is performing power-on self test (POST).
Steady red
POST failed.
Flashing yellow (1 Hz)
POST on some ports failed.
PWR
Off
The switch is powered off.
RPS Status LED
The RPS status LED helps you determine the working status of the RPS of the switch. Table 1-8
describes the RPS status LED for non-PoE switches and Table 1-9 describes that for PoE switches.
Table 1-8
RPS status LED (for S5120-28C-EI/S5120-52C-EI/S5120-24P-EI/S5120-48P-EI)
LED
Status
Description
Steady green
The AC input is normal, and the RPS is in the position
or works normally.
Steady yellow
The RPS input is normal, but the AC input fails or is not
connected.
RPS
Off
RPS is not connected.
