3Com MSR 50-40 ROUTER. Installation Manual page 18

LED Color
Green &
FAN
yellow
VPM
Green &
yellow
0-3
Green &
ESM0-1
yellow
Green &
VCPM
yellow
Green &
SFP0-1
yellow
Green &
CF
Yellow
USB0 Green
Green &
GE0/0
yellow
Number Status
Off
1 Steady green
Yellow
Off
4 Steady green
Yellow
Off
Steady green
2
Green, blinking
Yellow
Off
1 Steady green
Yellow
Off
Green
2
Green, blinking
Yellow
Off
Steady green
1
Green, blinking
Yellow
Off
Steady green
1
Green, blinking
Off
Green
Green, blinking
1
Yellow
Yellow, blinking
1-8
Meaning
The FAN module is not present.
The FAN module is working
normally.
The FAN module has failed.
VPMx is not present.
VPMx is present,
VPMx has failed.
ESMx is not present.
ESMx is present.
ESMx is processing services.
ESMx has failed.
VCPM is not present.
VCPM is present and operating
normally.
VCPM has failed.
No LINK.
SFP optical module gigabit LINK
SFP optical module is transmitting or
receiving data.
SFP has not passed the test.
No CF card.
CF card is present, and can be
identified by the router.
The system is accessing the CF
card (In this case, the card cannot
be removed).
CF card cannot be identified by the
router.
USB is not connected to HOST.
USB is connected to HOST, when it
can be removed.
USB is transmitting data, when it
cannot be removed.
No connection is established.
1000 Mbps connection is
established.
Active. GE0/0 is transmitting or
receiving data.
10/100 Mbps connection is
established.
Active. GE0/0 is transmitting or
receiving data.