HP ProBook 645 G4 - Keyboard Lights

Lights
Component Description
(1) Power light
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state, a power-saving state. The computer
shuts o power to the display and other unneeded components.
●
O: The computer is o or in Hibernation. Hibernation is a power-saving state that
uses the least amount of power.
(2) Caps lock light On: Caps lock is on, which switches the key input to all capital letters.
(3) Fn lock light On: The fn key is locked. For more information, see Hot keys (select products only)
on page 15.
(4) Keyboard backlight Illuminates the keyboard for higher visibility in low-light conditions.
(5) Mute light
●
On: Computer sound is o.
●
O: Computer sound is on.
(6) Microphone mute light
●
On: Microphone is o.
●
O: Microphone is on.
(7) Num lk light On: Num lock is on.
Keyboard area 11