User Manual

2-7
Chapter 2: Motherboard information
2. AT/ATX mode selection jumper (3-pin AT_ATX_SEL)
Pins
1-2 (Default) ATX mode
2-3 AT mode
21 2 3
ATX MODE
(Default)
AT MODE
AT_ATX_SEL
Connector type
HEADER 1x3p, 2.54mm pitch, S/T
3. COM Ring/+5V/+12V selection jumpers (6-pin COM1_SEL, COM2_SEL)
Setting Pins
12V 1-2
5V 3-4
Ring (Default) 5-6
RI
(Default)
5V12V
COM2_SEL
1
2
3
4
5
6
B
COM1_SEL
A
A B