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2-18
Chapter 2
2.8 Jumpers
There is a CMOS RAM on board that has a power supply from external
battery to keep the data of system configuration. With the CMOS RAM, the
system can automatically boot OS every time it is turned on. That battery has
long life time for at least 2 years. If you want to clear the system configuration,
use the JBAT1 (Clear CMOS Jumper ) to clear data. Follow the instructions be-
low to clear the data:
Clear Data
1
3
Keep Data
1
3
Clear CMOS Jumper: JBAT1
You can clear CMOS by shorting 2-3 pin while the
system is off. Then return to 1-2 pin position. Avoid
clearing the CMOS while the system is on; it will
damage the mainboard.
J1
CPU FSB Mode Jumper: J1
This jumper allows you to set the CPU FSB mode.
133/166 MHz
(auto detect, default)
100 MHz
1
4
1
4
1
4
166 MHz
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