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Chapter 4: Motherboard Connections
Chapter 4
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 serverboard layout indicating component
locations may be found in Chapter 1.
Please review the Safety Precautions in Appendix B before installing or removing components.
4.1 Power Connections
Two power connections on the 7049GP-TRT must be connected to the power supply. The
wiring is included with the power supply.
•
24-pin Primary ATX Power (JPWR1)
•
8-pin Processor Power (JPWR2)
Warning:
To provide adequate power to your system and to avoid damaging the power sup-
ply or the motherboard, be sure to connect all power connectors mentioned above to the
power supply. Failure in doing so may void the manufacturer warranty on your power supply
and motherboard.
Main ATX Power Supply Connector
The primary power supply connector (JPWR1) meets the ATX SSI EPS 24-pin specification.
ATX Power 24-pin Connector
Pin Definitions
Pin#
Definition
Pin#
Definition
13
+3.3V
1
+3.3V
14
NC
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
12V 8-pin PWR Connector
Pin Definitions
Pins
Definition
1 through 4 Ground
5 through 8 +12V