Aaeon SBC-551 Manual page 44

The SBC-551/552 CPU card's VGA connector supports mono-
chrome display as well as high resolution color displays. The
following table lists their pin assignments:
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
36 SBC-551/552 User Manual
Signal
Red video
Green video
Blue video
Not used
GND
Red return (GND)
Green return (GND)
Blue return (GND)
Key (no pin)
Sync return (GND)
Monitor ID (not used)
Monitor ID
Horizontal sync
Vertical sync
Not used