VIA Technologies VB8004, User Manual, Page: 49 / 124

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3. 3. 3. 3. Jumpers and Switches Jumpers and Switches Jumpers and Switches Jumpers and Switches
3.1. Clear CMOS Jumper
The onboard CMOS RAM stores system configuration data and has an onboard
battery power supply. To reset the CMOS settings, set the jumper on pins 2
and 3 while the system is off. Return the jumper to pins 1 and 2 afterwards.
Setting the jumper while the system is on will damage the mainboard. The
default setting is on pins 1 and 2.
Figu
Figu Figu
Figure
re re
re 32
32 32
32: C
: C : C
: Clear
lear lear
lear CMOS jumper
CMOS jumper CMOS jumper
CMOS jumper
Setting Setting Setting Setting Pin 1 Pin 1 Pin 1 Pin 1 Pin 2 Pin 2 Pin 2 Pin 2 Pin 3 Pin 3 Pin 3 Pin 3
Regular (default) On On Off
Clear CMOS Off On On
Table Table Table Table 22 22 22 22: C : C : C : Clear lear lear lear CMOS jumper settings CMOS jumper settings CMOS jumper settings CMOS jumper settings
Note: Note: Note: Note:
Except when clearing the RTC RAM, never remove the cap from the CLEAR_CMOS jumper default
position. Removing the cap will cause system boot failure. Avoid clearing the CMOS while the system
is on; it will damage the mainboard.