TP-Link manual Front panel of TL-SG3424P is shown as the following figure

L2 Managed Switch

LED	Status	Indication
	On	A 1000Mbps device is connected to the corresponding port.
1000Mbps
	Off	A 10/100Mbps device or no device is connected to the
		corresponding port.
	On	A device is connected to the corresponding port, but no
		activity.
Link/Act
	Flashing	Data is being transmitted or received.
	Off	No device is connected to the corresponding port.

The front panel of TL-SG3424P is shown as the following figure.

LEDs

Console Port

10/100/1000Mbps RJ45 Port

SFP Port

FFFFFFFFFFFFFront Panel of TL-SG3424P

TL-SG3424P has an LED mode switch button which is for switching the LED status indication. When the Speed LED is on, the port LED is indicating the data transmission rate. When the PoE LED is on, the port LED is indicating the power supply status. By default the Speed LED is on. Pressing the mode switch button, the Speed LED will turn off and the PoE LED will light up. Then the PoE LED will turn off after being on for 60 seconds and the Speed LED will light up again.

When the Speed LED is on, the port LED is indicating the data transmission rate.

LED	Status		Indication
	On		The switch is powered on.
Power	Off		The switch is powered off or power supply is abnormal.
	Flashing		Power supply is abnormal.
System	Flashing		The switch works properly.
	On/Off		The switch works improperly.
		On	A 1000 Mbps device is connected to the corresponding
	Green		port, but no activity.
10/100/		Flashing	Data is being transmitted or received.
		On	A 10/100 Mbps device is connected to the corresponding
1000 Mbps
	Yellow		port, but no activity.
		Flashing	Data is being transmitted or received.
	Off		No device is connected to the corresponding port.

When the PoE LED is on, the port LED is indicating the power supply status.

LED	Status	Indication
	On	The switch is powered on.
Power	Off	The switch is powered off or power supply is abnormal.
	Flashing	Power supply is abnormal.
System	Flashing	The switch works properly.
	On/Off	The switch works improperly.

Introduction 03