HP ProBook 5220m Notebook PC - Manual (Page 12)

Keys
Component Description
(1) fn key Executes frequently used system functions when pressed in
combination with a function key.
(2) Embedded numeric keypad keys To enable the embedded numeric keypad keys, press the fn and
num lk keys simultaneously. The embedded numeric keypad keys
can then be used like the keys on an external numeric keypad.
To disable the embedded numeric keypad keys, press the fn and
num lk keys simultaneously again.
(3) Function keys Execute frequently used system functions when pressed in
combination with the
fn key.
Front components
Component Description
(1) Drive light White: The hard drive is being accessed.
(2) Speakers (2) Produce sound.
(3) Vent Enables airflow to cool internal components.
NOTE: The computer fan starts up automatically to cool internal
components and prevent overheating. It is normal for the internal
fan to cycle on and off during routine operation.
4 Chapter 1 Features