HP ProBook 5220m Notebook PC - Manual (Page 22)

Component Description
(1) WWAN antennas (2)* (select models only) Send and receive wireless signals to communicate with
wireless wide-area networks (WWANs).
(2) WLAN antennas (2)* Send and receive wireless signals to communicate with
wireless local area networks (WLANs).
* For optimal transmission, keep the area immediately around the antennas free from obstructions.
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.
10 Chapter 1 Features