TP-Link TL-SG2424 User Manual page 17

When the PoE LED is on, the port LED is indicating the power supply status.
Name
Power
System
PoE Max
10/100/1000Mbps
For TL-SG2452:
Name Status
PWR
SYS
Green
10/100/1000Mbps
Yellow
Status Indication
On The switch is powered on.
Off The switch is powered off or power supply is abnormal.
Flashing Power supply is abnormal.
Flashing The switch works properly.
On/Off The switch works improperly.
On The remaining PoE power≤7W.
Flashing The remaining PoE power keeps ≤7W after this LED is
on for 2 minutes.
Off The remaining PoE power≥7W.
On The port is supplying power normally.
Green
The supply power exceeds the corresponding port's
Flashing
maximum power.
On Overload or short circuit is detected.
Yellow
Flashing Power-on self-test has failed.
Off No PoE power supply is provided on the port.
Indication
On Power is on.
Flashing Power supply is abnormal.
Off Power is off or power supply is abnormal.
On The switch is working abnormally.
Flashing The switch is working normally.
Off The switch is working abnormally.
A 1000Mbps device is connected to the corresponding
On
port but no activity.
Flashing Data is being transmitted or received.
A 10/100Mbps device is connected to the corresponding
On
port but no activity.
Flashing
Data is being transmitted or received.
Off No device is connected to the corresponding port.
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