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3 LED Indicators
The following figure shows the locations of the configuration switches
and LED indicators:

3.1 LED Indicators

LED DISPLAYSTATE INTERPRETATION
PWR Power status ON The device is powered on.
OFF The device is powered off.
SFP SFP slot status ON An SFP transceiver is installed.
OFF No SFP transceiver is installed.
LINK Lin k sta tus ON Copper-fiber link up
OFF Copper-fiber link down
BLINK Copper-fiber link with data traffic
OL Optical status ON Fiber port optical signal detected
OFF Fiber port no optical signal