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4.2
Jumper Settings
Jumpers provide a way to reconfigure the circuitry on the system board for specific needs. When
you change the CPU or want to reset the BIOS configuration, you need to change the jumper
settings.
See the next figure for jumper locations and the table that follow for jumper definitions.
CAUTION:
Jumpers not described in this section are reserv ed for factory use only. Do not
change the default settings.
Jumper
Definition
Setting
Description
1-2
Normal (default)
CCMOS1
CMOS setting
2-3
Clear CMOS
To clear the RTC and CMOS RAM, set CCMOS1 to
2-3 for one second and set it back to 1-2 again.
1-2
Auto-detect (default)
2-3
100 MHz
JP1
CPU bus
frequency
setting
None
133 MHz
