HP 721953-081 用户手册
Left
Component
Description
(1)
Power connector
Connects an AC adapter.
(2)
AC adapter/Battery light
●
White: The computer is connected to external power and
the battery is charged from 90 to 99 percent.
the battery is charged from 90 to 99 percent.
●
Amber: The computer is connected to external power and
the battery is charged from 0 to 89 percent.
the battery is charged from 0 to 89 percent.
●
Blinking amber: A battery that is the only available power
source has reached a low battery level. When the battery
reaches a critical battery level, the battery light begins
blinking rapidly.
source has reached a low battery level. When the battery
reaches a critical battery level, the battery light begins
blinking rapidly.
●
Off: The battery is fully charged.
(3)
Vents (2)
Enables 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.
the internal fan to cycle on and off during routine operation.
(4)
External monitor port
Connects an external VGA monitor or projector.
(5)
RJ-45 (network) jack
RJ-45 (network) lights (2)
Connects a network cable.
●
Green (left): The network is connected.
●
Amber (right): The network is showing activity.
(6)
HDMI port
Connects an optional video or audio device, such as a high-
definition television, or any compatible digital or audio
component.
definition television, or any compatible digital or audio
component.
(7)
USB 3.0 ports (2)
Connect optional USB 3.0 devices and provide enhanced USB
power performance.
power performance.
14
Chapter 2 External component identification