53
Chapter 4: Motherboard Connections
Chapter 4
Motherboard Connections
The LEDs on the motherboard are also described here. A motherboard layout indicating
component locations may be found in Chapter 1.
Please review the Safety Precautions in Appendix A before installing or removing components.
4.1 Power Connections
Two power connections on the H12DSi-N6 must be connected to the power supply.
• 24-pin Primary ATX Power (JPWR3)
• 8-pin Auxilliary Power (JPWR1/JPWR2)
Main Power Supply Connector
The primary power supply connector (JPWR3) is an ATX power connector that the power
supply plugs into directly.
ATX Power 24-pin Connector
Pin Denitions
Pin# Denition Pin # Denition
13 +3.3V 1 +3.3V
14 -12V 2 +3.3V
15 Ground 3 Ground
16 PS_ON 4 +5V
17 Ground 5 Ground
18 Ground 6 +5V
19 Ground 7 Ground
20 Res (NC) 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 Ground 12 +3.3V