3 In the Display Settings window, click the monitor 2 icon, click the Extend the desktop onto thismonitor check box, and then click Apply.4 Click OK to close the Display Settings window.To disable extended desktop mode:1 In the Display Settings window, click the Settings tab.2 Click the monitor 2 icon, uncheck the Extend the desktop onto this monitor option, and then clickApply.Using an External Monitor as Your Primary Display: SwappingPrimary and Secondary DisplaysTo swap your primary and secondary display designations (for example, to use your external monitor asyour primary display after docking), perform the steps in the following section that corresponds to theoperating system your computer is using.®Microsoft Windows® XP1 Click the Start button and click Control Pa nel.2 Under Pick a category, click Appearance and Th em es.3 Under Pick a task..., click the area you want to change, or under or pick a Control Panel icon, clickDisplay.4 Click the Settings tab→Advanced→Displays tab.Windows Vi sta®1 Click the Windows Vi sta Start button, , and click Control Pa nel.2 Under Appearance and Personalization, click Adjust screen resolution.3 In the Display Settings window, click the monitor 2 icon, click the This is my main monitor checkbox, and then click Apply.4 Click OK to close the Display Settings window.Using the Ambient Light SensorThe ambient light sensor is located on the front of the computer display. The sensor detects availableenvironmental light and automatically increases or decreases the display backlighting to compensate forlow-light and high-light environments.You can enable or disable the ambient light sensor feature by pressing the and left-arrow ke ycombination.NOTE: Do not cover the ambient light sensor with any adhesive labels. If covered up, the sensor—whenenabled—automatically sets the display brightness to the minimum level.46 Using the Display
