Toshiba PORTEGE M400 - Manual (Page 220)

3 Tests and Diagnostics 3.31 SETUP
3-102 [CONFIDENTIAL] PORTEGE M400 Maintenance Manual (960-541)
NOTE: Display of the LCD
Brightness will be changed in the condition below:
(*1) Operating the battery
(*2) Using the AC adapter
User Setting Use this option to set the battery save parameters on
the sub-window, BATTERY SAVE OPTIONS.
Battery Save Options
Processing Speed
This feature changes the CPU processing speed.
High CPU operates at 1.66/1.83/2.00/2.16GHz
(Default in Full Power Mode)
Low CPU operates at half processing speed.
(Default in Low Power Mode)
CPU Sleep Mode
Use this option to enable or disable the CPU sleep function.
Enabled Enables sleep mode. (Default)
Disabled Disables sleep mode.
LCD Brightness
Use this option to set the level of LCD brightness.
Super-Bright Full brightness for maximum visibility.
Bright Full brightness for high visibility.
Semi-Bright Less than full brightness for saving power.