HP EliteBook 840 G3 - Manual (Page 19)

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 off power to the display and
other unneeded components.
● Off: The computer is off or in Hibernation. Hibernation is a
power-saving state that uses the least amount of power.
(2) Microphone mute light ● Amber: microphone sound is off.
● Off: microphone sound is on.
(3) Num lock light On: Num lock is on.
(4) Wireless light On: An integrated wireless device, such as a wireless local area
network (WLAN) device and/or a Bluetooth® device, is on.
NOTE: On some models, the wireless light is amber when all
wireless devices are off.
(5) Mute light ● Amber: Computer sound is off.
● Off: Computer sound is on.
(6) Caps lock light On: Caps lock is on, which switches the keys to all capital letters.
(7) TouchPad light ● On: The TouchPad is off.
● Off: The TouchPad is on.
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