HP ProBook 645 G1 Notebook PC - Manual (Page 19)

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, the esc key,
or the b key.
(3) Windows button Returns you to the Start screen from an open app or the
Windows desktop.
NOTE: Pressing the Windows button again will return you
to the previous screen.
(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.
Front
Component Description
(1) Wireless light ● White: An integrated wireless device, such as a
wireless local area network (WLAN) device and/
or a Bluetooth® device, is on.
● Amber: All wireless devices are off.
Front 9