4.2.2
Display Brightness Adjustment
1.
Select "Brightness Control" under "Chipset".
2.
Select "Brightness Manual Control" under "Brightness Control", and there
will be six [6] options:
Note!
If you want to adjust brightness through AP in the OS, it will keep AP
configuration mainly, and BIOS configuration will not be saved.
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PPC-4211W User Manual