Standby Power LED
This LED will lit red when the system is in the standby mode. It indicates that there is power
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.
Chapter 6 Ports and Connectors
Chapter 5
Power Connectors
Standby Power LED
Use a power supply that complies with the ATX12V Power Supply Design Guide Version 1.1.
An ATX12V power supply unit has a standard 20-pin ATX main power connector that must be
inserted into the 20-pin connector. The 4-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 20-pin and 4-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.
38
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.
10 20
+5V
+12V
ATX power
5VSB
+5V
PW-OK
-5V
GND
GND
GND
+5V
GND
GND
PS-ON
Ground
+5V
GND
GND
Ground
3.3V
-12V
3.3V
3.3V
1
2
1
11
4
3
+12V
+12V
ATX 12V
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