User`s guide

Chapter 2

2.3 CLEAR CMOS DATA

JBAT1 is used to clear the CMOS Data in the RTC (build in ICH chip).

JBAT1 Description

Normal

Clear CMOS

2.3 CPU FREQUENCY SETTING

SW2 Description

4 3 2 1

5 6 7 8

133MHz

4 3 2 1

5 6 7 8

100MHz

Note: P4M266 only support 100MHz * 4 Front Side Bus, SW2 must set at [3,6].

2.4 FACTORY SETTING

SW1 Description

1 2 3 4

8 7 6 5

SB Default

Note: SW1 is SB default setting, cannot be changed.