1-12
Chapter 1: Product introduction
• Forafullyconguredsystem,werecommendthatyouuseapowersupplyunit
(PSU)thatcomplieswithATX12VSpecication2.0(orlaterversion)andprovidesa
minimumpowerof350W.
•
DONOTforgettoconnectthe4-pinATX+12Vpowerplug.Otherwise,thesystemwill
not boot up.
• WerecommendthatyouuseaPSUwithhigherpoweroutputwhenconguringa
systemwithmorepower-consumingdevices.Thesystemmaybecomeunstableor
maynotbootupifthepowerisinadequate.
•
Ifyouareuncertainabouttheminimumpowersupplyrequirementforyoursystem,
refertotheRecommendedPowerSupplyWattageCalculatorathttp://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
3. ATXpowerconnectors(24-pinEATXPWR,4-pinATX12V)
TheseconnectorsareforATXpowersupplyplugs.Thepowersupplyplugsare
designedtottheseconnectorsinonlyoneorientation.Findtheproperorientationand
pushdownrmlyuntiltheconnectorscompletelyt.
J1900I-C
J1900I-C 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
J1900I-C
J1900I-C Parallel port connector
PIN 1
LPT
STB#
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
ACK#
BUSY
PE
SLCT
AFD
ERR#
INIT#
SLIN#
GND
GND
GND
GND
GND
GND
GND
GND
4. LPT connector (26-1 pin LPT)
TheLPT(LinePrintingTerminal)connectorsupportsdevicessuchasaprinter.LPTis
standardizedasIEEE1284,whichistheparallelportinterfaceonIBMPC-compatible
computers.
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