Dell Inspiron 3800 System Reference Manual page 24

Using the Computer: Dell Inspiron 3800 System Reference
Use the key combinations in Table 4 to change the computer's processing speed.
Table 4. Processing Speed Key Combinations
Key Combinations Function
<Fn><\> Switches between the microprocessor's maximum speed and a slower compatibility speed
<Ctrl><\> In full MS-DOS mode or in a full-screen DOS box, switches between the microprocessor's maximum speed and a slower compatibility
speed
Speaker Key Combinations
NOTE: When using the integrated keyboard, you press <Fn> and the appropriate keys to perform certain functions (see
perform such functions on an external keyboard, you press <Scroll Lock> and the appropriate keys. You must be sure that the
External Hot Key option is enabled in the System Setup program.
Use the key combinations in Table 5 to adjust the computer's speaker volume and to enable and disable the speakers.
Table 5. Speaker Key Combinations
Key Combinations Function
<Fn><Page Up> Increases the volume of the integrated speakers and the external speakers, if attached
<Fn><Page Dn> Decreases the volume of the integrated speakers and the external speakers, if attached
<Fn><End> Enables and disables the integrated speakers and the external speakers, if attached
System Function Key Combinations
NOTE: When using the integrated keyboard, you press <Fn> and the appropriate keys to perform certain functions (see
perform such functions on an external keyboard, you press <Scroll Lock> and the appropriate keys. You must be sure that the
External Hot Key option is enabled in the System Setup program.
Use the key combinations in Table 6 to access MS-DOS, open the System Setup program, and open the Battery Status screen of the System Setup program.
Table 6. System Function Key Combinations
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Table 5). To
Table 6). To