Advantech PCA-6275 manual HDD LED Connector CN12, Power LED and Keylock Connector CN11

B.10 IR Connector (CN3)

Table B-10: IR connector (CN3)

Pin	Signal
1	+5 V
2	N/C
3	IR_RX
4	GND
5	IR_TX

B.11 HDD LED Connector (CN12)

Table B-11: HDD LED connector (CN12)

PinSignal

1VCC

2LED

B.12 Power LED and Keylock Connector (CN11)

You can use an LED to indicate when the CPU card is on. Pin 1 of CN11 supplies the LED's power, and Pin 3 is the ground.

You can use a switch (or a lock) to disable the keyboard so that the PC will not respond to any input. This is useful if you do not want anyone to change or stop a program which is running. Simply connect the switch from Pin 4 to Pin 5 of CN11.

Table B-12: Power LED and keylock connector (CN11)

Pin Function

1LED power (+5 V)

2NC

3GND

4Keyboard lock

5GND

Appendix B Pin Assignments 69