AAEON EPIC-CV01 Series - Manual (Page 17)

2-9 Chapter 2: Motherboard information
2. COM1 Ring and voltage selection (6-pin J1)
Pins
1-2 +12V
3-4 +5V
5-6 Ring (Default)
EPC-CV1 Series COM1 Ring and voltage selection
1 2 3 4 5 6
Ring
(Default)
+5V +12V
J1
3. AT Mode selection (2-pin J2)
Pins
1-2 AT Mode
EPC-CV1 Series AT Mode selection
AT MODE
J2
PIN1