User`s manual

SHB108 LAG1155 Full-Size SBC User’s Manual
Jumpers And Connectors
15
Pin
Signal
12
DPB_LANE3#
13
Detect Pin
14
GND
15
DPB_AUX
16
GND
17
DPB_AUX#
18
DPB_HPDE
19
GND
20
+3.3V
2.4.8 Front Panel Connector (CN12)
 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
control ATX power supply to be power on/off.