PCA-6781 User Manual 12
2.5.4 AT/ATX Power choose jumper(J3)
2.5.5 Clear CMOS (J4)
Table 2.6: AT/ATX Power choose jumper
Pin Function
1-2 ATX Power
2-3 (default) AT Power
123
1 23
Warning! To avoid damaging the computer, always turn off the power supply
before setting "Clear CMOS". Before turning on the power supply, set
the jumper back to normal operation.
This jumper is used to erase CMOS data and reset system BIOS
information.
The procedure for clearing CMOS is:
1. Turn off the system.
2. Short pins 2 and 3 for a few seconds.
3. Return jumper to pins 1 and 2.
3. Turn on the system. The BIOS is now reset to its default setting.
Table 2.7: Clear CMOS
Pin Function
1-2 (default) Normal
2-3 Clear CMOS
123
1 23