Atx 4 Pin 12V In Connector (Cn2); Front Panel Connector (Cn3) - AXIOMTEK SHB101 Series User Manual

SHB101 LGA775 Full-Size SBC User's Manual
2.4.1

ATX 4 Pin 12V In Connector (CN2)

You can connect it to the ATX12V power supply for CPU Core Voltage.
Pin
1
2
3
4
2.4.2

Front Panel Connector (CN3)

Power LED

This 3-pin connector denoted as Pin 1 and Pin 5 connects the
system power LED indicator to such a switch on the case. Pin 1 is
assigned as +, and Pin 5 as -. The Power LED lights up when the
system is powered ON. Pin 3 is defined as GND.
External Speaker and Internal Buzzer Connector

Pin 2, 4, 6 and 8 can be connected to the case-mounted speaker
unit or internal buzzer. While connecting the CPU card to an
internal buzzer, please short pins 2-4; while connecting to an
external speaker, you need to set pins 2-4 to Open and connect the
speaker cable to pin 8 (+) and pin 2 (-).
ATX Power On/Off Button

This 2-pin connector denoted as Pin 9 and 10 connects the front
panel's ATX power button to the CPU card, which allows users to
10
Signal
GND
GND
+12V
+12V
CN2
Jumpers and Connectors