www.d
fi
.com
Chapter 2 Hardware Installation
20
Chapter 2
Digital I/O Connector
The 8-bit Digital I/O connector (4-bit GPI and 4-bit GPO) provides powering-on function to
external devices that are connected to these connectors. The pin functions of the Digital I/O
connector are listed below:
2
1
19
Pin
Pin Assignment
Pin
Pin Assignment
1
GND
2
+12V
3
GPO3
4
+12V
5
GPO2
6
GND
7
GPO1
8
+5V
9
GPO0
10
+5V
11
GPI3
12
GND
13
GPI2
14
+5V_Standby
15
GPI1
16
+5V_Standby
17
GPI0
18
GND
19
GND
1
ON
2
34
DIO
Cooling Fan Connectors
The fan connectors are used to connect cooling fans. The cooling fans will provide adequate
airflow throughout the chassis to prevent overheating the CPU and system board components.
System Fan
1
3
Sense
Power
Ground
1
ON
2
34
SIO Fan
1
3
Sense
Power
Ground