DFI NP100-N16C - Manual (Page 50)

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Hardware Installation
Connect a 20-pin ATX main power connector from the power supply unit to the
ATX power connector. The system board requires a minimum of 120 Watt power
supply to operate. We recommend that you use a power supply that complies
with the ATX12V Power Supply Design Guide Version 1.1.
Important
The system board consumes a minimal amount of power. Due to its low
power consumption, you only need a 120W to 150W power supply. Every
power supply has its minimum load of power. If you use a greater than
150W power supply, the power consumed by the system board may not
attain its minimum load causing instability to the entire system.
Power Connector
1 1
11
10 20
1
3.3V
3.3V
GND
+5V
GND
+5V
GND
PW-OK
5VSB
+12V
3.3V
-12V
GND
PS-ON
GND
GND
GND
-5V
+5V
+5V