Changing the Jumper Settings

The main system board in your computer has a number of jumpers which control certain functions. These jumpers are preset at the factory to default positions; however, you can alter the following functions by changing the standard settings:

0 Enable or disable the built-in VGA display adapter

0Set the computer to use a CGA or other type of display adapter

0 Reset the CMOS RAM settings to the factory defaults

0Enable or disable the PQFP (surface-mounted) microprocessor on some 486SX/25 systems

DChange the microprocessor type (if you upgrade your system with a new microprocessor)

0 Change the processor speed.

If you need to change any jumper settings, or if you want to check the current settings, follow the instructions in this section.

The following tables list the jumper settings and their functions.

2-6Installing and Removing Options