Dell XPS 18 (1820, Early 2014) - Manual (Page 27)

Powered Stand │ 27
Powered Stand
Features
Feature Functionality
1 Docking-status light Turns on when your computer is
successfully docked (if the power adapter is
attached to the powered stand).
2 Docking connector Connects the computer to the docking port
to provide power to your computer and
charge the battery.
Docking-Status Light Behavior
Behavior Description
White Computer is docked in the powered stand
and the power adapter is connected to the
stand.
Off Computer is not docked, or the power
adapter is not connected to the stand.
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