Aaeon SBC-670S Manual page 33

In single-board computer (non-passive backplane) applications
you will need to connect a power directly to the SBC-670S board
using the connector labeled POWER CON. This connector is fully
compatible with the standard PC power supply connector. See the
following table for its pin assignments:
Pin
1
2
3
4
5
6
This connector provides a 4 pin power outlet port. See the
following table for its pin assignments:
Pin
1
2
3
4
Function
PG
+5V
+12V
-12V
GND
GND
Function
+5V
GND
GND
+12V