Intel AIMB-744 user manual Power LED CN16, External Speaker Connector CN17

B.10 Power LED (CN16)

You can use an LED to indicate when the motherboard is on. Pin 1 of CN16 supplies the LED's power, and Pin 3 is the ground.

Table B.10: Power LED and keylock conn (CN16)

Pin	Function
1	LED power (+5 V)
2	NC
3	GND
4	NC
5	GND

B.11 External Speaker Connector (CN17)

The motherboard has its own buzzer. You can also connect it to the exter- nal speaker on your computer chassis.

Table B.11: External Speaker Connector (CN17)

Pin	Function
1	Buzzer
2	NC
3	Buzzer
4	Speaker out

AIMB-744 User’s Manual 84