HP ProBook 640 G1 - Page 26

Component Description
(1) Power light
●
On: The computer is on.
●
Blinking: The computer is in the Sleep state.
●
Off: The computer is off.
(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
●
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.
(5) Mute light
●
Amber: Computer sound is off.
●
White: Computer sound is on.
(6) Caps lock light On: Caps lock is on.
(7) TouchPad light
●
Amber: The TouchPad is off.
●
Off: The TouchPad is on.
16 Chapter 2 External component identification