Component Description
optional headset microphone. This jack does not support 
optional standalone microphones.
WARNING! To reduce the risk of personal injury, adjust the 
volume before putting on headphones, earbuds, or a headset. 
For additional safety information, refer to the Regulatory, 
Safety, and Environmental Notices.
To access this guide:
▲
Select Start > All Programs > HP Help and Support > HP 
Documentation.
NOTE: When a device is connected to the jack, the computer 
speakers are disabled.
NOTE: Be sure that the device cable has a 4-conductor 
connector that supports both audio-out (headphone) and audio-
in (microphone).
18 Chapter 3   Components for the HP 240 Series Notebook