2.7Switches and jumpers

The motherboard frequency is adjusted through the DIP switches. The white block represents the switch position. The illustration below shows the ON and OFF positions of the switches.

 

 

DSW1

 

 

 

 

 

6

 

 

 

 

 

5

 

 

 

 

 

4

 

 

 

 

 

3

 

 

ON

 

1 2

 

 

 

ON

 

OFF

P4B533

 

DSW2

 

 

 

ON

ON

 

 

 

 

 

 

 

P4B533 DIP Switches

OFF

1

2

3

4

 

 

 

 

 

 

1.Frequency Selection 2.Frequency Selection 3.Frequency Selection 4.Frequency Selection 5.Frequency Selection 6.Frequency Selection

1.Frequency Multiple 2.Frequency Multiple 3.Frequency Multiple 4.Frequency Multiple

The JEN jumper must be set to pins 2-3 (jumper mode) if you wish to use the DIP switches. Otherwise, setting the switches does not produce any effect.

1.JumperFree™ mode (JEN)

This jumper allows you to enable or disable the JumperFree™ mode. The JumperFree mode allows you to change CPU settings through the BIOS setup instead of using the DIP switches.

DSW1

JEN

 

 

6

 

 

5

 

 

 

 

4

 

 

3

ON

 

1 2

 

 

 

 

 

 

DSW2 ON

 

 

 

 

 

1

2

3

4

 

 

1

2

 

 

2

3

 

P4B533

 

 

 

 

 

P4B533

Jumper Free

Jumper Mode

(Default)

 

 

 

JumperFree™

Mode Setting

 

 

 

 

 

The JEN jumper is set in conjunction with the DIP switches. In JumperFree mode, set all the DIP switches to OFF.

In jumper mode, set the switches as shown in item 2 (CPU Core:Bus frequency multiple) and item 3 (CPU external frequency selection).

2-16

Chapter 2: Hardware information