HP ProBook Notebook PC User Guide - Windows 7

Lights
NOTE: Refer to the illustration that most closely matches your computer.
Component Description
(1) TouchPad off indicator
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Amber: The TouchPad is off.
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Off: The TouchPad is on.
(2) Caps lock light On: Caps lock is on.
(3) HP QuickLook light Blinking: QuickLook is being opened or closed.
(4) HP QuickWeb light Blinking: The Web browser is being opened or closed.
Identifying hardware 3