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Power Connectors
Use a power supply that complies with the ATX12V Power Supply Design Guide Version 1.1.
An ATX12V power supply unit has a standard 24-pin ATX main power connector that must be
inserted into the 24-pin connector. The 8-pin +12V power connector enables the delivery of
more +12VDC current to the processor's Voltage Regulator Module (VRM).
The power connectors from the power supply unit are designed to fit the 24-pin and 8-pin
connectors in only one orientation. Make sure to find the proper orientation before plugging
the connectors.
The system board requires a minimum of 300 Watt power supply to operate. Your system
configuration (CPU power, amount of memory, add-in cards, peripherals, etc.) may exceed the
minimum power requirement. To ensure that adequate power is provided, we strongly recom-
mend that you use a minimum of 400 Watt (or greater) power supply.
Important:
Insufficient power supplied to the system may result in instability or the add-in boards
and peripherals not functioning properly. Calculating the system's approximate power
usage is important to ensure that the power supply meets the system's consumption
requirements.
Chapter 5 Ports and Connectors
Chapter 5
12 24
+3.3VDC
COM
+12VDC
+5VDC
+5VDC
+12VDC
+5VDC
+5VSB
PWR_OK
NC
COM
COM
COM
+5VDC
COM
COM
+5VDC
PS_ON#
COM
COM
+3.3VDC
-12VDC
+3.3VDC
+3.3VDC
1
13
ATX power
8
4
Ground
12V
5
1
12V power
41
Standby Power LED
This LED will light red when the system is in the standby mode. It indicates that there is pow-
er on the system board. Power-off the PC and then unplug the power cord prior to installing
any devices. Failure to do so will cause severe damage to the motherboard and components.
Standby
Power LED
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