HP ProBook 450 G4 Notebook PC and HP ProBook 455 G4 Notebook PC - Maintenance and Service Guide

Special function 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 lock key, or the the
esc key.
See Using the hot keys on page 13.
(3) Windows key Opens the Start menu.
NOTE: Pressing the Windows key again will close the Start
menu.
(4) num lock key Alternates between the navigational and numeric functions on
the integrated numeric keypad.
(5) Integrated numeric keypad A separate keypad to the right of the alphabet keyboard that
enables you to add, subtract, and perform other numeric tasks.
When num lock is on, the integrated keypad can be used like an
external numeric keypad.
12 Chapter 2 Components