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The Trigger allows to choose an event type of operation. E.g.
netdev means the network interface
connection type, and Device identifies the related network interface.
Select a Trigger type from
list, if additional option required then additional menu will appear.
You can
a LED to define or
a LED setting from the list
.
The Trigger mode and the Link On can be also defined as the Transmit (Tx) or Receive (Rx) for
data flow.
When you have modified the LED settings, save them by the
Save & Apply
button.