Asus P8H77I manual P8H77-I ATX power connectors, ATX power connectors 24-pin EATXPWR, 4-pin ATX12V

3.ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

ATX12V EATXPWR

	DC DC		+3 Volts
	+12V +12V		+12	Volts
			+12	Volts
		+5V Standby
			Power OK
		PIN 1		GND
			+5	Volts
7-I	GND GND
			+5 Volts
				GND
P8H7				GND
			+3	Volts
			+3	Volts

PIN 1

P8H77-I ATX power connectors

GND

+5 Volts

+5 Volts

+5 Volts

-5 Volts

GND

GND

GND

PSON#

GND

-12 Volts

+3 Volts

•For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum

power of 350 W.

•DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up.

•We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.

•If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.

4.CPU, and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)

Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector.

CHA_FAN

8 10

+5V CHA FAN IN CHA FAN PWR GND

CPU_FAN

CPU FAN PWM CPU FAN IN

CPU FAN PWR GND

8 01NIVKWVVMK\WZ[

Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! Do not place jumper caps on the fan connectors!

The CPU_FAN connector supports a CPU fan of maximum 2A (24 W) fan power.

ASUS P8H77-I 1-27