EMB-B75A
2-16
IMPORTANT:
• Forafullyconguredsystem,werecommendthatyouuseapowersupply
unit(PSU)thatcomplieswithATX12VSpecication2.0(orlaterversion)
andprovidesaminimumpowerof350W.
• DONOTforgettoconnectthe4-pinATX+12Vpowerplug.Otherwise,the
system will not boot up.
• WerecommendthatyouuseaPSUwithhigherpoweroutputwhen
conguringasystemwithmorepower-consumingdevices.Thesystem
maybecomeunstableormaynotbootupifthepowerisinadequate.
2.7.2 Internal connectors
1. ATX power connectors (24-pin EATX_PWR1, 4-pin EATX_PWR2)
TheseconnectorsareforATXpowersupplyplugs.Thepowersupplyplugs
aredesignedtottheseconnectorsinonlyoneorientation.Findtheproper
orientationandpushdownrmlyuntiltheconnectorscompletelyt.
EMB-B75A ATX power connectors
EATXPWR1
PIN 1
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
EATX_PWR2
+12V DC
+12V DC
GND
GND