Wireless LAN

A wireless local area network covers a relatively small geographic area, such as an office building or a house. Devices based on the 802.11 standards can connect to this network.

Wireless WAN

A wireless wide area network covers a broader geographic area. Cellular networks are used for data transmission, and access is provided by a wireless service carrier.

Bluetooth

One of a number of technologies used to create a wireless personal area network. Bluetooth can connect devices a short distance from one another, and is commonly used for connecting peripheral devices to a computer, transferring data between hand-held devices and PC, or remotely controlling and communicating with devices such as mobile phones.

WiMAX (Worldwide Interoperability for Microwave Access)

This long-range wireless data transmission technology based on the 802.16 standard, is expected to provide the user a “last mile” broadband connectivity similar to that provided by cable or ADSL, but without the need to physically connect a cable to the PC.

Making wireless LAN connections

Your computer comes with a built-in wireless networking card and a configuration utility to help you make wireless connections and monitor the status of your connection, so that you can stay connected to your network while you are in the office, in a meeting room, or at home, with no need for a wired connection.

Attention:

•If you carry your computer with the wireless LAN feature into an airplane, check the services with the airline before boarding the airplane.

•If there are restrictions on the use of computers on an airplane with the wireless feature, you need to disable it before boarding. To disable it, refer to the instructions in “Enabling or disabling the wireless feature” on page 70.

Note: You can purchase a wireless networking card as an option. For more information, refer to “Finding ThinkPad options” on page 149.

Tips for using the wireless LAN feature

•Place your computer so that there are as few obstacles as possible between the wireless LAN access point and the computer.

•For the best connection of the wireless LAN feature, open your computer display to an angle of slightly more than 90 degrees.

•If you use the wireless feature (the 802.11 standard) of your computer simultaneously with a Bluetooth option, data transmission speed can be delayed and the performance of the wireless feature can be degraded.

Wireless networking setup

To use the built-in wireless networking card (the 802.11 standard) to communicate, start Access Connections.

Note: Before you start setting up wireless networking connections by using Access Connections, obtain a Network Name (SSID) and your encryption information from your network administrator.

Access Connections, a connectivity assistant program, can easily enable one network adapter and disable the other adapters on demand. After setting up your wireless networking connection, you can use the program to quickly switch the network settings.

Chapter 2. Using your computer 63

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Lenovo X220I TABLET, X220 TABLET, X220-4287, 42872W5, 42875TU, 4290WFZPC10D518, 42912XU Making wireless LAN connections
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4291BR6PC10B616, 42875TU, 428742U, 4294CTO, X220-4287 specifications

Lenovo's X220i, X220i Tablet, and their respective models such as 42872W5, 42912XU, and 429133U are part of the ThinkPad series, renowned for their reliability, performance, and innovative features tailored for both business and personal use. The X220i and X220i Tablet stand out in the ultrabook category, offering a perfect balance between portability and functionality, making them ideal for professionals on the go.

The X220i features a 12.5-inch display, which delivers vibrant visuals and clear text, ensuring users can work efficiently in various lighting conditions. The display options may include HD resolutions with anti-glare technology, minimizing reflections and enhancing visibility. The X220i Tablet takes portability a step further by incorporating touchscreen capabilities, allowing for a more interactive experience, which is particularly useful for presentations and drawing applications.

Under the hood, both models are powered by Intel Core processors, providing solid performance for multitasking and demanding applications. The X220i comes with options for up to 8GB of RAM, ensuring smooth operation even when handling multiple applications simultaneously. Storage options typically include fast SSDs, which not only enhance boot times but also improve file access speeds, contributing to overall responsiveness.

A key feature of the ThinkPad series is its exceptional build quality. The X220i and X220i Tablet are constructed with durable materials, including magnesium alloy and reinforced hinges, designed to withstand the rigors of daily use. Additionally, they are tested against military specifications, ensuring reliability in challenging conditions.

Connectivity options are extensive, featuring USB 3.0 ports, a VGA port, and HDMI, allowing users to connect to various peripherals and external displays. Advanced wireless connectivity options such as Wi-Fi and Bluetooth enable seamless communication and file sharing.

Battery life is another area where the X220i series excels. The laptops are designed to last an extended period on a single charge, often exceeding 8 hours, making them suitable for long workdays without the need for a power outlet.

In conclusion, the Lenovo X220i, X220i Tablet, and their variants like 42872W5, 42912XU, and 429133U are exemplary devices that blend portability, performance, and durability. Ideal for professionals and students alike, these devices cater to a range of computing needs while maintaining a compact and lightweight profile.
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