HP 550 HP 550 Notebook PC - Maintenance and Service Guide - Page 19

Left-side components

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Left-side components Item (1) (2) Component RJ-11 (modem) jack Vent (3) External monitor port (4) Power connector (5) RJ-45 (network) jack (6) USB ports (3) (7) ExpressCard slot (8) Battery light Function Connects a modem cable. 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. Connects an external VGA monitor or projector. Connects an AC adapter. Connects a network cable. Connect optional USB devices. Supports optional ExpressCards. ● Amber: A battery is charging. ● Turquoise: A battery is close to full charge capacity. ● 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. ● Off: If the computer is plugged into an external power source, the light turns off when all batteries in the computer are fully charged. If the computer is not plugged into an external power source, the light stays off until the battery reaches a low battery level. Left-side components 11

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Left-side components
Item
Component
Function
(1)
RJ-11 (modem) jack
Connects a modem cable.
(2)
Vent
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.
(3)
External monitor port
Connects an external VGA monitor or projector.
(4)
Power connector
Connects an AC adapter.
(5)
RJ-45 (network) jack
Connects a network cable.
(6)
USB ports (3)
Connect optional USB devices.
(7)
ExpressCard slot
Supports optional ExpressCards.
(8)
Battery light
●
Amber: A battery is charging.
●
Turquoise: A battery is close to full charge capacity.
●
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.
●
Off: If the computer is plugged into an external power
source, the light turns off when all batteries in the
computer are fully charged. If the computer is not
plugged into an external power source, the light stays
off until the battery reaches a low battery level.
Left-side components
11