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A+ Server AS -1023US-TR4 User's Manual
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 Chapter 3 before installing or removing components.
4.1 Power Connections
Two power connections on the H11DSU-iN must be connected to the power supply. The wiring
is included with the power supply.
•
Two 25-pin primary proprietary power (PSU1/PSU2)
•
Four 8-pin backplane power (P PWR1, BP PWR2, BP PWR3, BP PWR4)
•
Three 8-pin GPU power (GPU PWR1, GPU PWR2, GPU PWR3)
Main Power Connector
The primary power connector must be connected to your power supply.
Backplane 12V and 5V 8-pin Power Connectors
BP PWR1–4 are 8-pin 12V and 5V DC power inputs for the system backplane.
Backplane 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4 Ground
5 - 6
+12V
7 - 8 +5V
GPU 12V 8-pin Power Connectors
GPU PWR1–3 are 8-pin 12V DC power inputs for GPUs that are installed in the system PCIe
slots.
GPU 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4 Ground
5 - 8 +12V