3Com 5500-EI Getting Started Manual page 19

LED Color
Off
Duplex Green
Yellow
Yellow flashing
Off
PoE Green
Green flashing
Yellow
Yellow flashing
Off
1000BASE-X SFP Port LEDs
Speed Green
Yellow flashing
Off
Duplex Green
Yellow
Yellow flashing
Off
100BASE-X SFP Port LEDs
Speed Green
Yellow flashing
Off
Duplex Green
Yellow
Yellow flashing
Off
Switch 5500 Family — Front View
Indicates
No link is present.
Full duplex, blinking off for every packet received or
transmitted.
Half duplex, blinking off for every packet received or
transmitted.
The port has failed POST.
No link is present.
Power is being delivered to the port.
Port power has exceeded limit or is unable to supply
power due to unit being over budget.
PoE error, no power supplied on port.
The port has failed post.
No power is being delivered.
A 1000 Mbps link is present.
The port has failed post.
No link is present.
Full duplex packets are being transmitted/received on
the port.
Half duplex packets are being transmitted/received on
the port.
Port failed POST.
No links is present.
A 100 Mbps link is present.
The port has failed post.
No link is present.
Full duplex packets are being transmitted/received on
the port.
Half duplex packets are being transmitted/received on
the port.
Port failed POST.
No links is present.
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