Aaeon SBC-555 Manual page 35

In single board computer (non-passive backplane) applications,
you need to connect power directly to the SBC-554V/555. This
connector is fully compatible with the standard PC power supply
connector. See the following table for its pin assignments:
Pin Function
1 +12V
2 GND
3 GND
4 +5V
The CN11 is a 5-pin invertor connector which could provide the
power for LCD invertor. The following table is the pin assign-
ment of CN11. The pin-5 "Invertor Enable" is normally active
"high". Please refer to "Power Management Setup" in the BIOS
SETUP Menu and select "LCD off Option" to enable power
management.
1
2
3
4
5
: +12V
: GND
: Reserved
: NC
: Invertor Enable