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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 and WiMAX combo antenna (Main), wireless LAN antenna (Third)
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.
3. Wireless WAN antenna (Main)
If your computer comes with a wireless WAN feature, its transmitter antenna is located at the top
right corner of the computer display.
Locating wireless regulatory notices
For more information about the wireless regulatory notices, refer to the ThinkPad Regulatory Notice shipped
with your computer.
If your computer is shipped without the Regulatory Notice, go to the Lenovo Web site at
http://www.lenovo.com/ThinkPadUserGuides. Then follow the instructions on the screen to nd the
Regulatory Notice.
Export classication notice
This product is subject to the United States Export Administration Regulations (EAR) and has an Export
Classication Control Number (ECCN) of 4A994.b. It can be re-exported except to any of the embargoed
countries in the EAR E1 country list.
Electronic emission notices
The following information refers to ThinkPad 4239, 4240, 4241, 4242, 4243, 4244, 4246, 4249, 4260, 4270,
4276, 4281, 4282, and 4284.
Appendix A. Regulatory information 265