External / Interal Speaker (Cn1, Pin 8~11) - Aaeon SBC-557 Manual

External/internal speaker
(CN1, Pin 8~11)
The CPU card has its own buzzer. You can also connect to the
external speaker on your computer chassis. Pin assignments for
CN1 (Pin8~11)are shown below:
CN1
External speaker (CN1, Pin 8~11)
Pin
8
9
10
11
* default
For external speaker connection :
Remove the default jumper cap from the pin 10~11away.
(+) : Please connect to pin 8
(-) : Please connect to pin 11
8
9
10
11
Function
Vcc (For external speaker use)
N/C
BZ_IN*
BUZZ* (For external speaker use)
Chapter 2 Installation 29