Fujitsu t2020 Mode D'Emploi

163 Before Using the Optional Wireless LAN

The WLAN device is an optional device that may come pre-installed in your mobile computer. Under 
normal circumstances, it should not be necessary for you to remove or re-install it. The operating system 
that your mobile computer comes with has been pre-configured to support the WLAN device. 

The wireless devices support IEEE802.11a, IEEE802.11b, IEEE802.11g, and IEEE802.11n.

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

Microwave ovens may interfere with the operation of WLAN devices since they operate in the same 2.4 GHz 
frequency range as IEEE802.11b/g/n devices. Interference by microwaves does not occur with IEEE802.11a 
radio which operates in the 5 GHz RF band.

Wireless devices that transmit in the 2.4 GHz range may interfere with operation of WLAN devices in 
IEEE802.11b/g/n modes. Symptoms of interference include reduced throughput, intermittent disconnects, 
and many frame errors. It is HIGHLY recommended that these interfering devices be powered off to ensure 
proper operation of the WLAN device.

Disconnecting 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.). The WLAN device can be 
deativated by using the Wireless On/Off Switch, and it can be disconnected in Windows using the WLAN 
icon in the system tray (Note that disconnecting via the icon in the system tray does not turn off the radio; 
it continues to transmit and receive even though it’s not connected.).

B

EFORE

 

USING

 

THE

 

WIRELESS

 LAN 

DEVICE

, 

YOU

 

MUST

 

FIRST

 

INSTALL

 C

LICK

M

E

! 

TO

 

ENSURE

 

THAT

 

THE

 

CORRECT

 

SOFTWARE

 

FOR

 

YOUR

 

DEVICE

 

IS

 

INSTALLED

. S

EE