Dell PP04X, D830 Using the Ambient Light Sensor, Click the Settings tab→ Advanced→ Displays tab

Using an External Monitor as Your Primary Display: Swapping Primary and Secondary Displays

To swap your primary and secondary display designations (for example, to use your external monitor as your primary display after docking), perform the steps in the following section that corresponds to the operating system your computer is using.

Microsoft® Windows® XP

1Click the Start button and click Control Panel.

2Under Pick a category, click Appearance and Themes.

3Under Pick a task..., click the area you want to change, or under or pick a Control Panel icon, click Display.

4Click the Settings tab→ Advanced→ Displays tab.

Windows Vista™

1Click the Windows Vista Start button, , and click Control Panel.

2Under Appearance and Personalization, click Adjust screen resolution.

3In the Display Settings window, click the monitor 2 icon, click the This is my main monitor check box, and then click Apply.

4Click OK to close the Display Settings window.

Using the Ambient Light Sensor

The ambient light sensor is located on the front of the computer display. The sensor detects available environmental light and automatically increases or decreases the display backlighting to compensate for low-light and high-light environments.

You can enable or disable the ambient light sensor feature by pressing the <Fn> and left-arrow key combination.

NOTE: Do not cover the ambient light sensor with any adhesive labels. If covered up, the sensor—when enabled—automatically sets the display brightness to the minimum level.

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Using the Display