HP ProBook 440 G2 Notebook PC - Manual (Page 29)

Component Description
(2) Speakers (2) Produce sound.
(3) Wireless button Turns the wireless feature on or off but does not establish a
wireless connection.
(4) Speaker mute button Mutes and restores speaker sound.
(5) Fingerprint reader (select models only) Allows a fingerprint logon to Windows, instead of a password
logon.
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