Asus Crosshair IV Extreme Manual page 77

12. ATX power connectors
(24-pin EATXPWR, 8-pin EATX12V, 4-pin EZ_PLUG_1/2)
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.
• 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 600 W.
• Do not forget to connect the 8-pin EATX12V power plug; otherwise, the
system will not boot.
• Connect the 4-pin EZ_PLUG power plugs to ensure sufficient power supply
when you install multiple graphics cards.
• Use of a PSU with a higher power output is recommended when
configuring a system with more power-consuming devices. The system
may become unstable or may not boot up if the power is inadequate. Refer
to the Appendix for the certified 500W power supply or above.
• 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.
ROG Crosshair IV Extreme 2-47