ASUS H87-PRO Manual De Usuario

1-22

Chapter 1: Product introduction

• 

For a fully configured system, we recommend that you use a power supply unit 

(PSU) that complies with ATX 12V Specification 2.0 (or later version) and provides a 

minimum power of 350W.

• 

Do not forget to connect the 4-pin/8-pin EATX 12V power plug. Otherwise, the system 

will not boot.

• 

We recommend that you use a PSU with a 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 want to use two high-end PCI Express x16 cards, use a PSU with 1000W power 

or above to ensure the system stability.

• 

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.

ATX power connectors (24-pin EATXPWR; 8-pin EATX12V)
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.

EATXPWR

PIN 1

GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts

+3 Volts

+12 Volts
+12 Volts

+5V Standby

Power OK

GND

+5 Volts

GND

+5 Volts

GND

+3 Volts
+3 Volts

EATX12V

PIN 1

+12V DC
+12V DC
+12V DC
+12V DC

GND
GND
GND
GND