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 use the information in the following tables to change their function, if necessary:

Port jumper settings

•Factory setting

•* DOS automatically reassigns parallel and serial ports. Check your DOS manual for more information.

Drive assignment jumper settings

Drive assignment

)

J17

)

J18

1

J19

1

J20

1

 

 

 

 

 

 

 

 

 

 

Upper drive is A

1

2-3

1

2-3

 

2-3

1

2-3

 

 

 

 

 

 

 

 

 

 

 

Lower drive is A

 

1-2’

 

1-2’

 

1-2’

 

1-2

 

 

 

 

 

 

 

 

 

 

 

* Factory setting

3-6 Installing and Removing Options