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Installation Manual
H3C S5500-EI Series Ethernet Switches
Chapter 1 Product Overview
1-9
1.3.5 Cooling System
The S5500-28C-EI-DC is equipped with four fans for heat dissipation.
1.3.6 LEDs
For descriptions about LEDs, see Table 1-4. You can switch the Mode LED display
mode between speed and duplex by pressing the Mode button on the panel.
Table 1-4
LEDs on the front panel of the S5500-28C-EI-DC
LED
Mark
Status
Description
Speed
Solid green
Rate of the port
Mode LED
Mode
Duplex
Solid yellow
Duplex mode of the port
Solid green
The switch is started
normally.
Flashing green (1 Hz)
The system is running a
power-on self-test
(POST).
Solid red
The system fails the
POST or a power failure
occurs.
Flashing yellow (1 Hz)
Some ports fail a POST
or a port failure occurs.
Power LED
PWR
OFF
The power is
disconnected.
Solid green
The DC input is normal
and the RPS is
connected and works
normally.
Solid yellow
The RPS input is
normal, but a DC input
failure occurs or no DC
power is connected.
Redundant power
system LED
RPS
OFF
No RPS is connected.
Solid green
The module is in
position and works
normally.
Flashing yellow
The switch does not
support the module or a
module failure occurs.
Module LED
MOD
OFF
No module is installed.