Lcd Power Select (J4); Clear Cmos (J7); Shift Clock Select (J8) - Aaeon PFM-336I Manual

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2.10 LCD Power Select (J4)

You can use J4 jumper to select the voltage setting for the LCD
power. To select a certain voltage level close the corresponding pin
numbers with a pin cap. Pin 1-2 will provide +5V of power and pin
2-3 will provide +3.3V of power.
J4
2-3
1-2

2.11 Clear CMOS (J7)

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."
J7
1-2
2-3

2.12 Shift Clock Select (J8)

J8
2-3
1-2
Chapter 2 Quick Installation Guide
Function
+3.3V
+5V (Default)
Function
Clear CMOS
Normal (Default)
Function
Ashclk
Shclk
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