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Motherboard Connections
This section describes the connections on the motherboard and provides pinout definitions.
Note that depending on how the system is configured, not all connections are required. The
LEDs on the motherboard are also described here. A motherboard layout indicating component
locations may be found in
Please review the Safety Precautions in
4.1 Power Connections
ATX Power Supply Connector
There is one 24-pin power supply connector (JPWR3) and three 8-pin 12 V DC power
connectors (JPWR1, JPWR2 and JPWR4) on the motherboard to provide power to your
system. Refer to the table below for pin definitions.
ATX Power 24-pin Connector
Pin#
13
14
15
16
17
18
19
20
21
22
23
24
Chapter 4
Chapter
1. More detail can be found in the
Appendix A
Pin Definitions
Definition
Pin#
Definition
+3.3 V
1
+3.3 V
NC
2
+3.3 V
Ground
3
Ground
PS_ON
4
+5 V
Ground
5
Ground
Ground
6
+5 V
Ground
7
Ground
Res (NC)
8
PWR_OK
+5 V
9
5 VSB
+5 V
10
+12 V
+5 V
11
+12 V
Ground
12
+3.3 V
Required Connection
58
Chapter 4: Motherboard Connections
Motherboard
before installing or removing components.
12 V 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
Ground
5 - 8
+12 V
Manual.
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Troubleshooting
