Advantech PCA-684 - External Speaker Connector (CN17); Power LED and Keyboard Lock (CN16); Keyboard Lock (CN 16)

99 Appendix B
B.12 Power LED and Keyboard Lock (CN16)
You can use an LED to indicate when the CPU card is on. Pin 1 of CN16
supplies the LED's power, and Pin 3 is the ground.
Pin 4 is for keyboard lock.
B.13 External Speaker Connector (CN17)
The CPU card has its own buzzer. You can also connect it to the external
speaker on your computer chassis.
Table B.12: Power LED and Keyboard Lock (CN 16)
Pin Function
1 LED power (+5 V)
2NC
3GND
4 Keyboard Lock
5GND
Table B.13: External Speaker Connector (CN 17)
Pin Function
1+5 VCC
2GND
3 Internal buzzer
4 Speaker out