structure mode, wireless devices can communicate with each other or with a wired network. Corporate wireless networks operate in infrastructure mode because they require access to the wired LAN in order to access computers, devices, and services such as file servers, printers, and databases.

How to Handle This Device

The WLAN device comes pre-installed in your mobile computer. Under normal circumstances, it should not be necessary for you to remove or re-install it. The Oper- ating System that your mobile computer comes with has been pre-configured to support the WLAN device.

WIRELESS NETWORK CONSIDERATIONS

■The WLAN devices support IEEE802.11a+b/g.

■The devices operate in the 2.4GHz ISM band the 5 GHz lower and middle UNII bands.

■The maximum range of the WLAN device indoors is typically 80 feet (25 meters). Please note that the max- imum range you achieve may be shorter or longer than 80 feet, depending on factors such as access point transmit power, number and density of obstructions, or external RF interference.

■Microwave ovens will interfere with the operation of WLAN device as microwave ovens operate in the same 2.4GHz frequency range that IEEE802.11b/g devices operate in. Interference by microwaves does not occur

W i r e l e s s L A N U s e r ’ s G u i d e

with IEEE802.11a radio which operates in the 5 GHz RF band.

■Wireless devices that transmit in the 2.4 GHz fre- quency range may interfere with the operation of WLAN devices in IEEE802.11b/g modes. Interference symptoms include reduced throughput, intermittent disconnects, and large amounts of frame errors. It is HIGHLY recommended that interfering devices be powered off to ensure proper operation of the WLAN.

DEACTIVATING THE WLAN DEVICE

Deactivation of the WLAN device may be desired in certain circumstances (to extend battery life) or where certain environments require it (i.e. hospitals, clinics, airplanes, etc.). Fujitsu mobile computers employ two methods with which to deactivate the WLAN device:

■Using the Wireless On/Off Switch, or,

■In Windows, using the Intel PROSet Software or Atheros Client Utility software.

Deactivation using the Wireless On/Off Switch

The WLAN device can be deactivated quickly and effi- ciently by toggling the Wireless On/Off Switch to the Off position. (Figure A-3)

The wireless On/Off switch has no effect on non-Wire- less LAN models.

Figure A-2. Access Point (Infrastructure) Mode Network

 

 

ADSL modem,

Wired LAN

Internet

 

cable modem,

 

 

or similar

 

Access Point*

Wireless LAN

*An optional hub for a wired LAN may be required depending upon the type of access point used.

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T4210, T4215 specifications

The Fujitsu T4215 and T4210 are versatile tablet PCs designed to cater to the needs of mobile professionals and students alike. Known for their robust performance and innovative features, these devices stand out in the competitive landscape of portable computing. Both models are part of Fujitsu's LifeBook series, emphasizing durability, functionality, and cutting-edge technology.

One of the distinguishing characteristics of both the T4215 and T4210 is their 12.1-inch WXGA display. The screens offer a resolution of 1280 x 800 pixels, ensuring that users enjoy crisp, clear visuals whether they are reading documents, watching videos, or engaging with graphical content. The touchscreen capability enhances user interaction, providing seamless navigation for tasks ranging from note-taking to graphic design.

Performance-wise, the T4215 and T4210 are powered by Intel's dual-core processors, making them adept at handling multitasking and demanding applications. Coupled with ample RAM and storage options, these tablet PCs offer an efficient computing experience, allowing users to run various software applications simultaneously without lag.

One of the notable features of these models is their advanced input options. Both devices support pen input, allowing users to write or draw directly on the screen. This functionality is particularly beneficial for professionals who require precise control, such as graphic designers or architects. Additionally, the ergonomically designed touchscreen facilitates both stylus and finger input, enhancing versatility.

Connectivity is another strong point for the Fujitsu T4215 and T4210. Equipped with multiple USB ports, a built-in webcam, and Wi-Fi capabilities, users can easily connect to a variety of devices and the internet. This level of connectivity ensures that users can remain productive in various environments, from the office to the classroom.

Security features are also integral to these tablet PCs, which offer biometric fingerprint recognition and data encryption options. These capabilities not only protect sensitive information but also provide peace of mind to users who handle confidential data.

In conclusion, the Fujitsu T4215 and T4210 embody the essence of portable computing with their blend of performance, versatility, and security. Whether utilized for business, education, or creative endeavors, these tablet PCs deliver a compelling solution for those in need of a reliable, feature-rich mobile computing device.
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