Diagnostics

Device Status Lights

Turns on when you turn on the computer and blinks when the computer is in a power management mode.

Turns on when the computer reads or writes data.

Turns on steadily or blinks to indicate battery charge status.

Turns on when wireless networking is enabled.

Turns on when a card with Bluetooth wireless technology is enabled. To turn off only the Bluetooth wireless technology function, right-click the icon in the system tray and select Disable Bluetooth Radio

Battery Status Lights

If the computer is connected to an electrical outlet, the battery light operates as follows:

Alternately blinking amber light and blue light	An unauthenticated or unsupported non-Dell AC adapter
	is attached to your laptop.
Alternately blinking amber light with steady blue light	Temporary battery failure with AC adapter present.
Constantly blinking amber light	Fatal battery failure with AC adapter present.
Light off	Battery in full charge mode with AC adapter present.
Solid white light on	Battery in charge mode with AC adapter present.

Battery Charge and Health

To check the battery charge, press and release the status button on the battery charge gauge to illuminate the charge- level lights. Each light represents approximately 20 percent of the total battery charge. For example, if four lights are on, the battery has 80 percent of its charge remaining. If no lights appear, the battery has no charge.

To check battery health using the charge gauge, press and hold the status button on the battery charge gauge for at least 3 seconds. If no lights appear, the battery is in good condition and more than 80 percent of its original charge

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E5520M, 5520, E5520 specifications

The Dell 5520 series, which includes the E5520 and E5520M models, represents a blend of performance, reliability, and advanced features suitable for both personal and professional use. These laptops have garnered attention for their sturdy build quality and focus on productivity.

The Dell 5520 series is powered by Intel's Core processors, ensuring smooth multitasking and efficient performance. The E5520 features the second generation of Intel Core processors, which offer improved power efficiency and graphics capabilities. This makes the laptop suitable for various tasks, from office work to multimedia consumption.

One of the standout features of the E5520 is its expansive display. The laptop typically comes with a 15.6-inch screen, providing ample real estate for viewing documents, spreadsheets, and presentations. The LED-backlit display delivers bright visuals with excellent color accuracy, enhancing the overall user experience, whether for work or entertainment.

The design of the Dell 5520 series also prioritizes durability. The laptops are built with a chassis that meets military-grade specifications, providing resistance against various environmental factors, including vibrations, humidity, and extreme temperatures. This durability makes the E5520 series suitable for professionals who are often on the move.

In terms of connectivity, the E5520 models are equipped with multiple USB ports, including USB 3.0 for rapid data transfer. An HDMI output is also present, allowing users to connect the laptop to external displays for presentations or larger media viewing. Additionally, the inclusion of an integrated webcam and microphone supports video conferencing needs, making it a practical choice for remote work.

Security features are another highlight of the Dell 5520 series. With options for biometric login through fingerprint readers, users can ensure their data remains secure. Furthermore, Dell's Data Protection suite offers robust security measures to safeguard personal and professional information.

Battery life is a crucial characteristic of any laptop, and the E5520 does not disappoint. The series typically provides a solid battery performance, allowing users to work unplugged for extended periods. This mobility factor is essential for those who often find themselves away from a power source.

With a variety of storage options, including HDD and SSD configurations, users can choose a setup that suits their needs, balancing capacity and speed as required. The Dell 5520, E5520, and E5520M series laptops stand out as reliable workhorses for various users, offering a combination of performance, durability, and features that cater to modern demands. Whether for business or personal use, the Dell 5520 series remains a commendable choice in today’s laptop market.