SBC-776 Chapter 2 37
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Power connector (CN23)ATX power connector (CN23)
The ATX power supply uses 20-pin connector shown below. Make
sure you plug in the right direction.
ATX power connector (CN23)
Pin Signal Pin Signal
1 +3.3V 11 +3.3V
2 +3.3V 12 -12V
3 GND 13 GND
4 +5V 14 POWER ON
5 GND 15 GND
6 +5 V 16 GND
7 GND 17 GND
8 POWER OK 18 -5V
9 +5VSB 19 +5V
10 +12V 20 +5V
Speaker/Buzzer (CN 24)You can choose to use the internal buzzer on the SBC-776 baord, or
you may use your own external speaker.
Speaker/Buzzer (CN24)
Speaker On Board Buzzer
CN24 1 2 3 4