HP ProBook 4520s HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Page 23
Right-side components - battery not charging
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Component (1) USB ports (2) (2) RJ-11 (modem) jack (select models only) (3) Optical drive (select models only) (4) Optical drive light (select models only) (5) AC adapter light (6) Power connector Description Connect optional USB devices. Connects a modem cable. Reads optical discs and, on select models, also writes to optical discs. Blinking: The optical drive is being accessed. ● On: The computer is connected to external power and the battery is charging. ● Off: The computer is not connected to external power. Connects an AC adapter. Right-side components 15
Component
Description
(1)
USB ports (2)
Connect optional USB devices.
(2)
RJ-11 (modem) jack (select models only)
Connects a modem cable.
(3)
Optical drive (select models only)
Reads optical discs and, on select models, also writes to optical
discs.
(4)
Optical drive light (select models only)
Blinking: The optical drive is being accessed.
(5)
AC adapter light
●
On: The computer is connected to external power and the
battery is charging.
●
Off: The computer is not connected to external power.
(6)
Power connector
Connects an AC adapter.
Right-side components
15