Sharp PC-AV18 Series Operation Manual page 56

Controlling CPU Speed
Windows XP controls the processor performance to reduce power consumption.
Do not control the processor performance, or connect/disconnect the AC
adapter while communicating, or reading/writing data. Otherwise your
computer may malfunction.
1. In the Power Options Properties dialog box, select Power Schemes tab.
2. Select an appropriate power scheme from the pull-down menu in Power schemes
field according to the table below, and click OK.
3. Close the Power Options Properties dialog box, then the Control Panel window.
Power Scheme
Home/Office Desk
Portable/Laptop
Presentation
Always On
Minimal Power
Management
Max Battery
Processor Performance
Using AC Always runs at highest performance state
Power
Using Battery Performance state will be chosen based on CPU
demand
Using AC Performance state will be chosen based on CPU
Power demand
Using Battery Performance state will be chosen based on CPU
demand
Using AC Performance state will be chosen based on CPU
Power demand
Using Battery Always runs at lower performance state
Using AC Always runs at highest performance state
Power
Using Battery Always runs at highest performance state
Using AC Performance state will be chosen based on CPU
Power demand
Using Battery Performance state will be chosen based on CPU
demand
Using AC Performance state will be chosen based on CPU
Power demand
Using Battery Always runs at lower performance state
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