IEI Technology WAFER-6820, User Manual, Page: 13 / 61

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2.4 Clear CMOS Setup (J2)
If want to clear the CMOS Setup (for example forgot the password you
should clear the setup and then set the password again.), you should
close the J2 pin 2-3 about 3 seconds, then open again. Set back to
normal operation mode, close pin 1-2.
J2 DESCRIPTION
1-2 Normal Operation
2-3
Clear CMOS Setup
2.5 Fan Connector (J3)
The WAFER-6820 provides a CPU cooling fan connector. This
connector can supply 5V/500mA to the cooling fan.
PIN NO. DESCRIPTION
1 +5V
2 GND
2.6 LCD Voltage and Clock Setting (J4)
The LCD interface connector CN5 can provide 5V or 3.3V power
supply by selecting the J4 (2,4,6) to meet the different LCD
requirement. And the JP4 (1,3,5) can provide normal or inverted Shift
CLOCK for LCD.
J4 (2,4,6) DESCRIPTION
2-4 5V
4-6 3.3V
JP4 (1,3,5) DESCRIPTION
1-3 Shift Clock Invert
3-5 Shift Clock (Normal)