HP DM4 - Manual (Page 18)

Left side
Component Description
(1) Security cable slot Attaches an optional security cable to the computer.
NOTE: The security cable is designed to act as a
deterrent, but it may not prevent the computer from being
mishandled or stolen.
(2) External monitor port Connects an external VGA monitor or projector.
(3) Audio in (microphone) jack Connects an optional computer headset microphone,
stereo array microphone, or monaural microphone.
(4) Audio-out (headphone) jack Produces sound when connected to optional powered
stereo speakers, headphones, ear buds, a headset, or
television audio.
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.
NOTE: When a device is connected to the jack, the
computer speakers are disabled.
(5) Drive light ● Blinking white: The hard drive is being accessed.
● Amber: HP ProtectSmart Hard Drive Protection has
temporarily parked the hard drive.
NOTE: For information on HP ProtectSmart Hard
Drive Protection, refer to the HP Notebook Reference
Guide.
(6) Power light ● White: The computer is on.
● Blinking white: The computer is in the Sleep state.
● Off: The computer is off or in Hibernation.
(7) Vents (3) Enable airflow to cool internal components.
NOTE: The computer fan starts up automatically to cool
internal components and prevent overheating. It is normal
for the internal fan to cycle on and off during routine
operation.
10 Chapter 2 External component identification