Aaeon PCM-4894 User Manual page 32

The CPU card has its own buzzer. You can disable the internal
buzzer and connect an external speaker to CN14. Enabling the
external speaker automatically disables the internal buzzer.
1 2 3 4
Pin
1
2
3
4
26 PCM-4894 User Manual
Buzzer
Function
Vcc
Speaker output
Buzzer in
Speaker output
External Speaker
1 2 3 4
OR
1 2 3 4