HP ProBook 450 G2 Notebook PC HP ProBook 455 G2 Notebook PC Maintenance and Service Guide

Component Description
(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.
Keys
Component Description
(1) esc key Displays system information when pressed in combination with
the fn key.
(2) fn key Executes frequently used system functions when pressed in
combination with a function key, the num lk key, or the esc key.
(3)
Windows key Windows 8.1 : Returns you to the Start screen from an open app
or the Windows desktop.
NOTE: Pressing the Windows key again will return you to the
previous screen.
Windows 7: Displays the Windows Start menu.
(4) Function keys Execute frequently used system functions when pressed in
combination with the fn key.
(5) num lk key Alternates between the navigational and numeric functions on
the integrated numeric keypad.
(6) Integrated numeric keypad When num lk has been enabled, it can be used like an external
numeric keypad.
12 Chapter 2 External component identification