Samsung NP900X4D-A04US - Manual (Page 26)

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Chapter 1
Getting Started
Overview
Status indicators and sensors (Optional)
1 2
1 Charge Status
This shows the power source and the battery
charge status.
Green: When the battery is fully charged or
the battery is not installed.
/ Red or orange: When the battery is being
charged.
Off: When the computer is running on
battery power without being connected to
AC adapter.
2
Illumination
Sensor
(Optional)
This sensor detects the ambient illumination of
the PC.
If the ambient illumination becomes dark,
the LCD becomes dimmer and the keyboard
backlight is lit.
On the contrary, if the ambient illumination
becomes brighter, the LCD becomes brighter
and the keyboard backlight is turned off.