2Built-in microphone (right)

12Built-in microphone (left)

The built-in microphone captures sound and voice when it is used with an application program capable of handling audio.

3

Power switch

Use the power switch to turn on the computer. To turn off your computer, use the Start menu shutdown options.

If you cannot turn off the computer by this method, press and hold the power switch for 2 seconds.

If your computer stops responding, and you cannot turn it off, press and hold the power switch for 4 seconds or more. If the system is still not reset, remove the ac power adapter and the battery.

The power switch can also be programmed through Power Manager to shut down the computer or put it into sleep (standby) or hibernation.

4

PCI Express Mini Card slot for wireless WAN or mSATA solid state drive (SSD)

Your computer might include a PCI Express Mini Card in the PCI Express Mini Card slot which enables wireless WAN communications.

With Lenovo technologies advancing to provide you with the best engineered systems, some models are equipped with an mSATA solid state drive for data storage.

5

PCI Express Mini Card slot for wireless LAN/WiMAX

Your computer might include a PCI Express Mini Card in the PCI Express Mini Card slot which enables wireless LAN/WiMAX communications.

6

Color sensor

The color sensor allows you to measure and adjust the color accuracy of your displays. For details, refer to the instructions in “Color Sensor Utility” on page 25.

7

Memory-upgrade slot

You can increase the amount of memory in your computer by installing a memory module in the memory bay. Memory modules are available as options.

Note: If your computer is a dual-core processor model, two Dummy DIMM cards are preinstalled and do not replace the Dummy DIMM cards with SO-DIMMs. For details, refer to the instructions in “Increasing or replacing memory (W520)” on page 139.

UltraNav®

8TrackPoint® buttons

9TrackPoint pointing stick

21Touch pad

22Touch pad buttons

The keyboard contains the unique TrackPoint pointing device. Pointing, selecting, and dragging are all part of a single process that you can perform without moving your fingers from typing position.

Move your fingertip across the UltraNav touch pad to move the pointer.

The TrackPoint and touch pad buttons provide functions similar to those of a mouse and its buttons.

Chapter 1. Product Overview 3

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Lenovo 42825BU manual Built-in microphone right Built-in microphone left, Power switch, Color sensor, Memory-upgrade slot
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4242X04, NVS-4200M, 42421A0, 42825BU specifications

Lenovo offers a diverse range of products tailored to meet the needs of professionals and consumers alike. Among them, models such as the Lenovo 42825BU, 42421A0, and 4242X04 stand out with impressive specifications that cater to various use cases.

The Lenovo 42825BU is an excellent choice for those seeking a dependable laptop for general productivity tasks. Powered by the latest generation Intel Core processor, it ensures smooth performance whether you're working on spreadsheets, attending virtual meetings, or browsing the web. One of its standout features is the high-resolution display that delivers vivid colors and sharp images, making it perfect for graphic design work or watching videos. Furthermore, the device includes ample RAM, allowing for multitasking without lag and enhancing overall efficiency.

Next in line, the Lenovo 42421A0 offers enhanced processing power and graphics performance thanks to the inclusion of the NVIDIA NVS-4200M graphics card. This feature is particularly beneficial for professionals who require a workstation that can handle demanding graphical applications such as video editing and 3D modeling. The NVS-4200M provides excellent visual output, ensuring that users can work with advanced graphics tools without compromising performance.

The 4242X04 model takes portability to another level without sacrificing power, making it ideal for on-the-go professionals. With a lightweight design and long battery life, it allows users to work from anywhere without the constant need for a power source. Coupled with fast charging technology, users can quickly recharge their devices during breaks, ensuring minimal downtime.

All these Lenovo models are built with reliability and durability in mind, often featuring robust chassis that can endure daily wear and tear. Additionally, they incorporate various security features including biometric login options, enabling safe and secure access to sensitive data.

In summary, the Lenovo 42825BU, 42421A0, and 4242X04 laptops are designed to meet the demands of a diverse user base. With powerful processing capabilities, impressive graphics performance, and features designed for portability and durability, these models are well-suited for both professional and personal use.
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