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A+ Server AS -2124US-TNRP User's Manual
Motherboard Connections
This section describes the connections, jumpers and LED indicators on the motherboard and
provides pinout definitions. Not all connections are required. 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
Two power connections on the H12DSU-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 (JPW1 – JPW4)
•
Three 8-pin GPU power (GPU JPWR1, GPU JPWR2, GPU JPWR3)
Main Power Connector
Two proprietary main power headers are located at PSU1 and PSU2. Connect appropriate
power supply units to these two headers to provide adequate power to your system.
Important: To provide adequate power to the motherboard, connect the both main power
connectors to the power supply. Failure to do so may void the manufacturer's warranty on
your power supply and motherboard.
Backplane 12V and 5V 8-pin Power Connectors
BP PWR1–4/BP are 8-pin 12V and 5V DC power inputs for the system backplane.
GPU 12V 8-pin Power Connectors
PWR1–3/GPU are 8-pin 12V DC power inputs for GPUs that are installed in the PCIe slots.
Chapter 4
Backplane 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
Ground
5 - 6
+12V
7 - 8
+5V
GPU 8-pin Power
Pin Definitions
Pin#
Definition
1 - 4
Ground
5 - 8
+12V
56
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