Specifications

• Forafullyconguredsystem,werecommendthatyouuseapowersupplyunit
(PSU)thatcomplieswithATX12VSpecication2.0(orlaterversion)andprovides
aminimumpowerof350W.
• 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conguring
asystemwithmorepower-consumingdevicesorwhenyouintendtoinstall
additional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.
1.7.2 Internal connectors
1. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
TheseconnectorsareforATXpowersupplyplugs.Thepowersupplyplugsaredesignedtot
theseconnectorsinonlyoneorientation.Findtheproperorientationandpushdownrmly
untiltheconnectorscompletelyt.
H81M-C R2.0
H81M-C R2.0 ATX power connectors
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
ATX12V
PIN 1
+12V DC +12V DC
GND GND
ASUS H81M-C R2.0
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