3In the Display Settings window, click the monitor 2 icon, click the Extend the desktop onto this monitor check box, and then click Apply.

4Click OK to close the Display Settings window.

To disable extended desktop mode:

1In the Display Settings window, click the Settings tab.

2Click the monitor 2 icon, uncheck the Extend the desktop onto this monitor option, and then click Apply.

Changing Your Primary Display

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→ AdvancedDisplays tab.

See the documentation that came with your video card for additional information.

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.

Saving Battery Power

When you change your location, such as moving from artificial light to direct sunlight, and you do not adjust your display, you could waste battery power unnecessarily. The ambient light sensor monitors the light intensity in the environment and optimizes your display to conserve battery power.

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Dell PP04X manual Saving Battery Power, Changing Your Primary Display, Click the Settings tab→ Advanced→ Displays tab

PP04X specifications

The Dell PP04X, commonly known as the Dell Latitude E6420, is a versatile and robust laptop that is designed for business professionals and power users alike. It combines performance, durability, and a wide array of connectivity options, making it a popular choice in the corporate world.

One of the standout features of the PP04X is its solid build quality. The laptop is constructed with a premium aluminum chassis paired with a magnesium alloy frame, ensuring it can withstand the rigors of daily use. The spill-resistant keyboard provides an added layer of protection against accidental spills, making this device a reliable option for users on the go.

The Dell PP04X is powered by Intel's second-generation Core processors, providing excellent performance for multitasking and demanding applications. With options ranging from Core i3 to Core i7, users can select the level of power they need for their specific tasks. The laptop supports up to 8GB of DDR3 RAM, which contributes to its ability to handle multiple applications simultaneously without compromising speed.

In terms of storage, the Latitude E6420 offers various configurations, including traditional hard drives (HDD) and solid-state drives (SSD), allowing users to balance performance and storage capacity based on their requirements. The inclusion of SSD options results in faster boot times and quicker file access, greatly enhancing overall productivity.

The display of the Dell PP04X is another highlight. It features a 14-inch HD screen with anti-glare technology, making it suitable for use in various lighting conditions, whether in a brightly lit office or while traveling. The high-resolution screen ensures crisp visuals, ideal for presentations and detailed graphic work.

Connectivity options on the Latitude E6420 are plentiful, featuring multiple USB ports, an HDMI output, and an ExpressCard slot for expandability. Additionally, users can opt for built-in mobile broadband capabilities to stay connected on the move.

Dell also places a strong emphasis on security in the PP04X. The laptop includes features such as a fingerprint reader, smart card reader, and optional TPM (Trusted Platform Module) for enhanced security, ensuring that sensitive information remains protected.

Overall, the Dell PP04X Latitude E6420 is an excellent choice for business users who require a durable and powerful laptop. With its blend of performance, security features, and connectivity options, it is well-suited to meet the demands of a fast-paced work environment. Whether for office use or travel, the PP04X provides a reliable and efficient computing experience.