default.

Note: Be sure that to record all custom settings of the Switch before pressing the reset button. Resetting the Switch back to factory default settings will erase all custom configurations.

Power and System LEDs

Power LEDs

On

Off

When the Power LED light is on, the Switch is receiving power.

When the Power LED light is off, the power cord is not or improperly connected.

CPU LEDs ( Management Indicator)

Blinking

When the CPU is working, the CPU LED is blinking.

 

 

Off

The CPU is idle.

 

 

Ports 1 ~ 24 Status LEDs

Link/Act

On

When the Link/Act LED light is on, the respective port is

 

successfully connected to an Ethernet network.

 

 

Blinking

When the Link/Act LED is blinking, the port is

 

transmitting or receiving data on the Ethernet network.

 

 

Off

No link.

 

 

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D-Link DES-1228P Power and System LEDs, Power LEDs, CPU LEDs Management Indicator, Ports 1 ~ 24 Status LEDs Link/Act