HP ProBook 440 G3 Notebook PC - Maintenance and Service Guide
Component Description
(2)   Speakers (2) Produce sound.
(3) Wireless button Turns the wireless feature on or o but does not establish a 
wireless connection.
A wireless network must be set up before a wireless connection is 
possible.
(4) Volume mute button Mutes and restores speaker sound.
(5)   Fingerprint reader (select products only) Allows a ngerprint logon to Windows, instead of a password 
logon.
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