Jumpers; Clear Cmos Jumper: Clear_Cmos - VIA Technologies P4MA PRO User Manual

The VIA P4MA PRO mainboard provides jumpers for setting the mainboard's
functions. This section will explain how to change settings for your mainboard's
functions through the use of the jumpers.

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:
3
Clear CMOS
WARNING!

Jumpers

M
1
Keep CMOS
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.
3 1
2-19
Installation
1
CLEAR_CMOS