User`s manual

22 PCN-6351/6351L User's Manual
2.3 Extend Line Pin Header (JP1)
The PCN-6351/6351L provides a multi-function pin header for easy
access to setting/connecting ATX power on/off, reset, hard disk LED,
keyboard lock, and speaker.
Table 2-2: Ext. line pin header (JP1)
Function Pin Pin Function
NC 1 2 NC
GND 3 4 NC
GND 5 6 ATX Power on/off
GND 7 8 RESET
HDD LED- 9 10 HDD LED +
Pwr LED + 11 12 NC
NC 13 14 Speaker +
GND 15 16 NC
KeyLock 17 18 Buzzer -
GND 19 20 Speaker -
Note 1: If you are using a buzzer, Pin 18 and Pin 20 need to
be shorted.
Note 2. A speaker and buzzer cannot be used together.