3Com 4500 Getting Started Manual page 19

LED Color
RPS LED (3CR17571-91 and 3CR17572-91 only)
Green
Yellow
Off
10BASE-T/100-TX Port LEDs
Speed Green
Yellow
Yellow Flashing
Off
Duplex (3CR17571-91 and 3CR17572-91 only)
Green
Yellow
Yellow flashing
Off
PoE (3CR17571-91 and 3CR171572 only)
Green
Green flashing
Yellow
Yellow flashing
Off
1000BASE-X SFP Port LEDs
Speed Green
Yellow Flashing
Off
Duplex (3CR17571-91 and 3CR17572-91 only)
Green
Yellow
Yellow flashing
Off
Switch 4500 — Front View Detail
Indicates
AC and RPS supply connected.
AC failed or not connected. RPS supply is OK.
There is no RPS supply connected.
A high speed (100 Mbps) link is present, blinking off for
every packet received or transmitted.
A low speed (10 Mbps) link is present, blinking off for every
packet received or transmitted.
The port has failed POST.
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 high speed (1000 Mbps) link is present.
Port 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 link is present.
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