Biostar A690E-IS Setup Manual page 15

LCD Backlight Inverter
This connector is for connecting to LCD for providing backlight control function.
RS-232/422/485 Headers
The headers determine that JCOM1 belongs to RS-232, 422, or 485.
Pin Assignment
1 5V/12V DC
2 5V/12V DC
3 NC
4 NC
5 Backlight On
6 Brightness Adjust
7 GND
8 GND
1-2 RS-232
3-4 RS-422
5-6 RS-485
JSEL2
RS-232
1-3
2-4
7-9
JSEL1
8-10
A690E-IS
JSEL2
JSEL1
RS-422 RS-485
3-5 3-5
4-6 4-6
9-11 9-11
10-12 10-12
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