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Item Component Description
(9) Hard drive light
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Blinking white: The hard drive is being accessed.
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Off: The hard drive is idle.
(10) Power light
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White: The computer is on.
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Blinking white: The computer is in the Sleep state.
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Off: The computer is off or in Hibernation.
Right side
Item Component Description
(1) Optical drive (select models only) Reads and writes to an optical disc.
(2) Optical drive light
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On: The optical drive is in use.
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Off: The optical drive is idle.
(3) USB ports (2) Connect optional USB devices.
(4) Power connector Connects an AC adapter.
(5) Battery/AC adapter light
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White: The computer is connected to external power
and the battery is fully charged.
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Amber: A battery is charging.
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Blinking amber: The battery has reached a low
battery level, or there is a battery error. When a
battery reaches a critical battery level, the battery
light begins blinking rapidly.
(6) 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.
16 Chapter 2 External component identification