Changing the Jumper Settings

A jumper is a small electrical connector that controls one of the computer’s functions. The jumper settings in your computer are preset at the factory; however, you can alter the following functions by changing the standard settings:

Ll Change the microprocessor type

tl Enable or disable the built-in VGA display adapter

Ll Enable or disable the built-in mouse port

LI Enable or disable a mouse or other pointing device on an option card

Cl Set the computer to use a color or monochrome adapter

LI Enable or disable the password function.

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.

CPU type jumper settings

CPU type

J5

J6

J7

J8

 

 

 

 

 

486$X/33

B

B

B

B

 

 

 

 

 

ODP486-33 or 487SX/33

A

A

A

A

 

 

 

 

 

You do not need to change jumpers J5 through J8 unless you had to remove the existing microprocessor chip to install the new one. See “Installing a New Processor Chip” on page 2-21 for more information.

2-6 Installing and Removing Options