2.7Switches and jumpers

The motherboard frequency is adjusted through the DIP switches. The white block represents the switch position. The illustration below shows all the switches in the OFF position.

P4B

P4B DIP Switches

SWITCH OFF ON

 

2 1

 

ON

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

10 9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.Frequency Multiple

2.Frequency Multiple

3.Frequency Multiple

4.Frequency Multiple

5.Frequency Selection

6.Frequency Selection

7.Frequency Selection

8.Frequency Selection

9.Frequency Selection

10.Reserved

Figure 2-21

DIP Switches

The JEN jumper must be set to pins 1-2 (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.

JEN OFF

2 1

 

ON

 

 

3

 

 

 

 

4

 

 

 

 

5

 

 

 

 

SWITCH

P4B

8 7 6

 

10 9

 

3

2

2

1

 

P4B JumperFree™ Mode Setting Jumper Mode

Jumper Free

 

(Default)

Figure 2-22 JumperFree Mode Setting

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

ASUS P4B motherboard user guide

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