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Due to the fact that integrated wireless cards operate within the guidelines found in radio frequency safety
standards and recommendations, Lenovo believes they are safe for use by consumers. These standards and
recommendations reect the consensus of the scientic community and result from deliberations of panels
and committees of scientists who continually review and interpret the extensive research literature.
In some situation or environment, the use of integrated wireless cards may be restricted by the proprietor
of the building or responsible representatives of the organization. These situations and areas may for
example include:
• Using the integrated wireless cards on board of airplanes, in hospitals or near petrol stations, blasting
areas (with electro-explosive devices), medical implants or body-worn electronic medical devices, e.g.
pace makers.
• In any other environment where the risk of interference to other devices or services is perceived or
identied as harmful.
If you are uncertain of the policy that applies on the use of wireless devices in a specic organization (e.g.,
airport or hospital), you are encouraged to ask for authorization to use integrated wireless cards prior to
turning on the computer.
Location of the UltraConnect™ wireless antennas
ThinkPad models feature an integrated diversity antenna system built into the display for optimal reception,
enabling wireless communication wherever you are.
ThinkPad X220 and X220i
1. Wireless LAN and WiMAX combo antenna (Auxiliary)
The auxiliary antenna connected to the wireless LAN or WiMAX feature is located on the upper left
side of the computer display, near the center.
2. Wireless LAN (third), Wireless LAN/WiMAX (main), and Wireless WAN (main)
The main antenna connected to the wireless LAN or WiMAX feature is located on the upper right side of
the computer display, near the center. If your computer has the Multiple Input Multiple Output (MIMO)
wireless LAN feature, the third wireless antenna is also located here.
244 User Guide