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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 motherboard 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
There are several different power connectors on the X11DPU-XLL as described below.
•
SMCI-proprietary Power Connectors (PSU1/PSU2)
•
8-pin HDD Backplane Power Connectors (JPW1-JPW4)
PSU1 and PSU2 Power Connectors
Two SMCI-proprietary power supply units (PSU1/PSU2) are located on the motherboard
to provide main power supply to your system. Power is connected to PSU1 and PSU2
automatically when the power supply modules are installed.
HDD Power Connectors
Four 8-pin HDD backplane power connectors (JPW1 - JPW4) are used to provide power to
hard drives and other backplane devices. See the table below for pin definitions.
12V 8-pin Backplane Power
Connector Pin Definitions
Pin#
Definition
1 through 4
Ground
5/6
+12V
7/8
+5V
