3Com 3CR17251-91 - Switch 5500G-EI Stackable Gigabit Ethernet Getting Started Manual page 22

22 C 1: I
HAPTER NTRODUCING THE
S S 4 S
UPER TACK WITCH
LED Color
Unit LED
Green
Green flashing
Green flashing 'f' There has been a fan failure.
Green flashing 't' The Switch is over temperature and unit temperature
Stack LED
Green
Green flashing
Yellow
Off
Module LED (Switch 5500G-EI only)
Green
Yellow flashing
Off
Mode LED
Duplex Yellow
Speed Green
PoE Red
RPS LED
Green
Yellow
Off
5500 F
AMILY
Indicates
Power on Self Test (POST) is in progress. During POST
a test ID number appears in the Unit LED (seven
segment display)
or
Software download is in progress. During software
download, a clockwise cycling bar appears in the Unit
LED.
The Switch has failed POST. The Unit LED flashes the
number of the test that has failed.
is critical.
The XRN stack is functioning in resilient mode. Loop
cable is attached.
Switch is not compatible with the other Switches in
the stack.
The XRN stack is functioning without the loop
connection.
Stacking Cables are not connected.
The Module is installed and operating normally.
The Module is installed but not supported or faulty.
The Module is not installed.
10/100/1000 Duplex and Activity, 1000 SFP Duplex
and Activity, or Stack Activity.
10/100/1000 Port Speed and Activity, 1000 SFP
Status and Activity, or Stack Status and Activity.
10/100/1000 port showing PoE information.
AC and RPS supply connected.
AC failed or not connected. RPS supply is OK.
There is no RPS supply connected.