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21 PPC-L128T User Manual
Chapter 4 Jumper Settings and Connectors
4.2.1 COM1/COM2/COM3 pin 9 output setting (CN20&CN21)
Default Ring function
* +5V output
* +12V output
Default Ring function
Ring function (1-2) Output 5 V(3-4) Output 12 V(4-5)
4.3 VGA Interface
4.3.1 LCD panel power setting
The panel PC's AGP SVGA interface supports 12V LCD displays. The LCD cable
already has a built-in default setting. You do not need to adjust any jumper or switch
to select the panel power.
Table 4.3: COM1/ COM2 pin 9 output setting (CN20)
CN20
Note! Pins 1, 3, 5, 7 and 9 are dedicated to COM1.
Pins 2, 4, 6, 8 and 10 are dedicated to COM2.
Table 4.4: COM3 pin 9 output setting (CN21)
CN21
1 3 5 7 9
2 4 6 8 10
1 3 5 7 9
2 4 6 8 10
1 3 5 7 9
2 4 6 8 10
1 5
1 5
1 5