TP-Link TL-SG3428X-UPS Installation Manual page 13

PWR1* PWR2
Green On Yellow On**
Off Green On
Off Off
LED Indication
Flashing: The switch works properly.
SYS
On or Off: The switch works improperly.
Green: All the fans work properly.
FAN
Yellow: Not all the fans work properly.
On: A device is linked to the port but no activity.
Link/Act Off: No device is linked to the corresponding port.
Flashing: Transmitting or receiving data.
Green On: Running at 1000 Mbps, but no activity.
Green Flashing: Running at 1000 Mbps and transmitting or receiving data.
Port 1-24 Yellow On: Running at 100 Mbps, but no activity.
Yellow Flashing: Running at 100 Mbps and transmitting or receiving data.
Off: No device is linked to the corresponding port.
Green On: Running at 10 Gbps, but no activity.
Green Flashing: Running at 10 Gbps and transmitting or receiving data.
Port 25–28 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.
*PWR1 is the primary power supply and it takes priority over PWR2.
**When both PWR1 and PWR2 work properly and the switch is powerd by PWR1, it takes 10-20 seconds for
the LED PWR2 (yellow) to go out after PWR2 is unplugged.
For TL-SG3428MP, TL-SG3428XMP, TL-SG3452P and TL-SG3452XP
LED Indication
On: The switch is powered on.
PWR Off: The switch is powered off or power supply is abnormal.
Flashing: Power supply is abnormal.
Flashing: The switch works properly.
SYS
On or Off: The switch works improperly.
On: The remaining PoE power is ≤ 7 W.
PoE Max Flashing: The remaining PoE power keeps ≤ 7 W after this LED is on for 2 minutes.
Off: The remaining PoE power is > 7 W.
Indication
The switch is powered by PWR1.
PWR1 and PWR2 are connected.*
The switch is powered by PWR2.
PWR1 is disconnected or it works improperly.
The switch is powered off or both PWR1 and PWR2 work
improperly.
JetStream L2/L2+ Managed Switch
Introduction 09