Specifications

EMB-B75A
2-16
IMPORTANT:
• Forafullyconguredsystem,werecommendthatyouuseapowersupply
unit(PSU)thatcomplieswithATX12VSpecication2.0(orlaterversion)
and provides a minimum power of 350 W.
• 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.Thesystem
may become unstable or may not boot up if the power is inadequate.
2.7.2 Internal connectors
1. ATX power connectors (24-pin EATX_PWR1, 4-pin EATX_PWR2)
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.
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