User's Manual

Installation
2-19
Socket 478
M
Clear CMOS Jumper: CLEAR_CMOS
The onboard CMOS RAM stores system configuration data and has an onboard
battery power supply. The long-life battery has a lifetime of at least 5 years. If
you want to clear the system configuration data from the CMOS RAM, use the
CLEAR_CMOS (Clear CMOS jumper). Follow the instructions below to clear
the data:
Jumpers
The VIA P4MA mainboard provides jumpers for setting the mainboard’s func-
tions. This section will explain how to change settings for your mainboard’s
functions through the use of the jumpers.
Clear CMOS
Keep CMOS
3
1
3
1
You can clear the CMOS by shorting 1-2 pin while
the system is off. Then return it to the 2-3 pin
position. Avoid clearing the CMOS while the
system is on; this will damage the mainboard.
WARNING!
CLEAR_CMOS
1