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.

 

SWITCH

 

 

 

 

 

ON

ON

 

 

 

 

 

 

 

OFF

1

2

3

4

5

6

7

8

9 10

 

 

 

1. Frequency Multiple

 

 

2. Frequency Multiple

 

 

3.

Frequency Multiple

P4B266-C

 

4. Frequency Multiple

 

 

5.

Frequency Selection

 

 

6. Frequency Selection

 

 

7.

Frequency Selection

 

 

8.

Frequency Selection

P4B266-C DIP Switches

 

9.

Frequency Selection

10. Reserved

 

 

 

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

 

SWITCH

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

9 10

1

2

 

 

 

 

2

3

 

 

P4B266-C

 

 

 

 

 

 

 

 

 

Jumper Mode

 

 

Jumper Free

 

 

 

 

 

(Default)

 

 

P4B266-C JumperFree™ Mode Setting

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

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Chapter 2: Hardware information