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Chapter 5 Ports and Connectors
Chapter 5
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ATX Power Connector
ATX power
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 power connector from the power supply unit is designed to fit the 24-pin connector in
only one orientation. Make sure to find the proper orientation before plugging the connector.
The system board requires a minimum of 300Watt 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 400Watt (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.
13
12
24
1
+3.3V
+3.3V
GND
+5V
GND
+5V
GND
PWR_OK
+5VSB
+12V
+12V
+3.3V
+3.3V
-12V
GND
PS_ON#
GND
GND
GND
NC
+5V
+5V
+5V
GND
S/PDIF Connector
The S/PDIF connector is used to connect an external S/PDIF port. Your S/PDIF port may be
mounted on a card-edge bracket. Install the card-edge bracket to an available slot at the rear
of the system chassis then connect the audio cable to the S/PDIF connector. Make sure pin 1
of the audio cable is aligned with pin 1 of the S/PDIF connector.
1
5
+5V
Key
SPDIF out
Ground
SPDIF in
S/PDIF
