Diagnostic LEDs

LED	Description	Color	Meaning
PWR	Power supply	green	The power LED lights up when connected to a power supply unit and the power supply is switched on.
PoE	Displays the state of the connected loads.	green	Lights up green when a load is connected and supplied.
PoE	Displays the state of the connected loads.	red	Flashes red in the event of an overload.
PM1	Indicates the PoE mode	green	Lights up green for loads that are fed from a wire pair (mode A or mode B).
PM1	Indicates the PoE mode	blue	Lights up blue for loads that are fed from two wire pairs (mode A and mode B).
PM2	Indicates the PoE class of the loads	green	Lights up green for loads with PoE class 0 to 3.
PM2	Indicates the PoE class of the loads	blue	Lights up blue for loads with PoE class 4.
LINK / ACT	Indicates whether loads are connected.	yellow	The LED lights up yellow when a load is connected. The LED flashes during data traffic.
SPEED	Indicates the speed of the connection.	green	At speeds of 10 or 100 Mbit/s, the LED lights up green.
SPEED	Indicates the speed of the connection.	red	In 1000 Mbit/s (Gigabit) mode, the LED lights up red.