screen clean and set the brightness to levels that enable you to see the screen clearly. Press F7 or F8 to adjust display brightness.

Head position: Keep your head and neck in a comfortable and neutral (vertical, or upright) position.

Chair: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments to best suit your desired posture.

Arm and hand position: If available, use chair arm rests or an area on your working surface to provide weight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal) position. Type with a soft touch without pounding the keys.

Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.

What if you are traveling?

It might not be possible to observe the best ergonomic practices when you are using your computer while on the move or in a casual setting. Regardless of the setting, try to observe as many of the tips as possible. Sitting properly and using adequate lighting, for example, will help you maintain desirable levels of comfort and performance.

Questions about vision?

The visual display screens of ThinkPad notebook computers are designed to meet the highest standards and to provide you with clear, crisp images and large, bright displays that are easy to see, yet easy on the eyes. Of course, any concentrated and sustained visual activity can be tiring. If you have questions on eye fatigue or visual discomfort, consult a vision care specialist for advice.

Comfort

Observe the following guidelines to achieve greater comfort and improve performance.

Active sitting and rest breaks: The longer you sit and work with your computer, the more important it is to observe your working posture. Follow “Ergonomic information” on page 43 and practice “active sitting” to avoid discomfort associated with your working postures. Making minor voluntary postural changes and taking short frequent work breaks are the key ingredients for healthy computing. Your computer is light and mobile; you can easily reposition your working surface to accommodate many posture modifications.

Work area setup options: Familiarize yourself with all of your office furniture so that you know how to adjust your work surface, seat, and other work tools to accommodate your preferences for comfort. If your work area is not in an office setting, be sure to take special note of employing active sitting and taking work breaks. Many ThinkPad product solutions are available to help you modify and expand your computer to best suit your needs. Access the following Web site to view some of these options: http://www.lenovo.com/accessories/services/index.html. Explore your options for docking solutions and external products that provide the adjustability and features that you want.

Accessibility information

Lenovo is committed to providing people with disabilities greater access to information and technology. As a result, the following information provides ways to help users that have hearing, vision, and mobility limitations get the most out of their computer experience.

Assistive technologies enable users to access information in the most appropriate way. Some of these technologies are already provided in your operating system. Others can be purchased through vendors, or accessed through the World Wide Web http://www.lenovo.com/healthycomputing.

44User Guide

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Lenovo 3259AD9, 336655U manual Comfort, Accessibility information

3259AD9, 336655U specifications

The Lenovo 336655U and 3259AD9 are distinguished models within Lenovo's extensive portfolio, specifically designed to cater to the needs of both professionals and everyday users. These devices combine cutting-edge technology with user-friendly features, ensuring a seamless experience for various tasks, from everyday computing to more intensive applications.

Starting with the Lenovo 336655U, this model is powered by Intel’s reputable Core i5 processor, providing a perfect blend of performance and efficiency. With a base clock speed of 2.4 GHz, the processor can handle multitasking with ease, allowing users to run multiple applications simultaneously without a hitch. The device is equipped with 8GB of RAM, which supports smooth performance for applications ranging from productivity software to creative tools. Storage is provided by a 256GB SSD, which not only offers ample space for documents, multimedia files, and programs but also ensures faster boot times and data access compared to traditional hard drives.

On the other hand, the Lenovo 3259AD9 is tailored for users who need reliable performance in a compact design. It features an AMD Ryzen 5 processor, a powerful alternative that provides exceptional performance for both demanding tasks and light usage scenarios. With integrated Radeon graphics, the device supports casual gaming and video streaming with ease. Similar to its counterpart, the 3259AD9 comes with 8GB RAM and a 256GB SSD, ensuring a speedy and efficient computing experience.

Both models prioritize connectivity, featuring multiple USB ports, HDMI output, and an Ethernet port. This ensures compatibility with various peripherals and external displays. Furthermore, the inclusion of Bluetooth technology allows for convenient wireless connections to headphones, keyboards, and mice, enhancing flexibility for users on the move.

Display quality is also a focal point in these Lenovo models. The Lenovo 336655U sports a 15.6-inch Full HD display, offering vibrant colors and sharp detail, perfect for media consumption and professional work. The Lenovo 3259AD9 boasts a similar screen size and resolution, making both devices suitable for graphic design as well as everyday tasks.

In terms of battery life, both models are designed to last through a full workday, enabling users to work efficiently without the constant need for charging. Their sleek and lightweight designs make them highly portable, catering to professionals and students alike.

In conclusion, the Lenovo 336655U and 3259AD9 stand out as reliable, efficient, and versatile machines. Whether for professional work, educational purposes, or everyday use, these models embody Lenovo’s commitment to quality and performance in the dynamic world of computing.