HP ProBook 4320s, 4321s, 4420s, and 4421s Notebook PC

Lights
Component Description
(1) TouchPad off indicator
●
Amber: The TouchPad is off.
● 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.
(5) Power light
●
On: The computer is on.
● Blinking: The computer is in Standby.
● Off: The computer is off or in Hibernation.
(6) 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.
12 Chapter 2 External component identification