TP-Link JetStream L2, Installation Manual

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JetStream L2/L2+ Managed Switch
06 Introduction
LED Indication
Port 25–28
On : Running at 1 Gbps, but no activity.
Flashing : Running at 1 Gbps and transmitting or receiving data.
Off : No device is linked to the corresponding port.
For TL-SG3428X
LED Indication
PWR
On : The switch is powered on.
Off : The switch is powered off or power supply is abnormal.
Flashing : Power supply is abnormal.
SYS
Flashing : The switch works properly.
On or Off : The switch works improperly.
Link/Act
On : A device is linked to the port but no activity.
Off : No device is linked to the corresponding port.
Flashing : Transmitting or receiving data.
1000Mbps
On : Running at 1000 Mbps.
Off : Running at 10/100 Mbps or no device is linked to the port.
Port 25–28
Green On : Running at 10 Gbps, but no activity.
Green Flashing : Running at 10 Gbps and transmitting or receiving data.
Yellow On : Running at 1 Gbps, but no activity.
Yellow Flashing : Running at 1 Gbps and transmitting or receiving data.
Off : No device is linked to the corresponding port.
For TL-SG3428MP V2.0, TL-SG3428XMP and TL-SG3452P
LED Indication
PWR
On : The switch is powered on.
Off : The switch is powered off or power supply is abnormal.
Flashing : Power supply is abnormal.
SYS
Flashing : The switch works properly.
On or Off : The switch works improperly.
PoE Max
On : The remaining PoE power is ≤ 7 W.
Flashing : The remaining PoE power keeps ≤ 7 W after this LED is on for 2 minutes.
Off : The remaining PoE power is > 7 W.
FAN
Green : All the fans work properly.
Yellow : Not all the fans work properly.