Installation Of The Approved Wireless Module; Rf Safety Compliance; Emergency Calls; Simultaneous Use Of Rf Transmitters - Lenovo ThinkPad L420 User Manual

Wireless wan adapter
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Installation of the approved wireless module

If no integrated wireless WAN PCI Express Mini Card has been preinstalled in your ThinkPad computer, you
can install one, provided by Lenovo as an option. Plug the wireless card option into the PCI Express Mini
Card slot. For the installation procedure, see the "Installing and replacing the PCI Express Mini Card for
wireless WAN connection" section in the user guide for your computer.
Attention: The ThinkPad computers contain an authentication mechanism. If you install an unauthorized
wireless WAN PCI Express Mini Card that is not approved for use in your ThinkPad computer, the computer
will not start, but only displays an error message and emits beeps.

RF safety compliance

The radiated energy from the antenna connected to the Wireless WAN adapter conforms to the FCC limit of
the SAR (Specific Absorption Rate) requirement regarding 47 CFR Part 2 section 1093, when the computer
was tested in the conventional orientation.
The transmission antenna for the PCI Express Mini Card is located in the LCD cover. See "Location of the
UltraConnect™ wireless antennas" in the user guide for your computer.

Emergency calls

The Wireless WAN adapters embedded in the ThinkPad computer do not support voice calls, hence their use
for essential communication is not possible, including emergency calls regarding the E911 rule.

Simultaneous use of RF transmitters

The Wireless WAN adapter is approved for simultaneous use with certain wireless transmitters. For a list of
those transmitters, refer to the latest ThinkPad Regulatory Notice, which has been uploaded on the Web site
at:
http://www.lenovo.com/support
Make sure of the following conditions when you use any other external RF option device:
1. When you use any other RF option device, you are requested to confirm that the device conforms to the
RF Safety requirement and is approved to use for your computer.
2. You must follow the RF Safety instructions of the RF option device that are included in the user manual
of the RF option device.
3. If the RF option device is prohibited to use in conjunction with another transmitters, you must turn
off all other wireless features in your computer.
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