HP 250 Series User Manual page 30

Component
18 Chapter 3 Components for the HP 240 Series Notebook
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).