Maintenance and Service Guide 2–1
2
External component identification
Top components
Wireless antenna locations
To see wireless regulatory notices, refer to the section of the Regulatory, Safety and Environmental Notices that 
applies to your country or region. These notices are located in Help and Support.
Item Component Description
1
WWAN antenna* Sends and receives wireless signals to communicate with wireless wide area 
networks (WWAN).
2
WLAN antennae (2)* Send and receive wireless signals to communicate with wireless local area 
networks (WLAN).
3
External WWAN antenna Sends and receives wireless signals to communicate with wireless wide area 
networks (WWAN).
*These antennae are not visible from the outside of the computer. For optimal transmission, keep the areas immediately 
around the antennae free from obstructions.