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Chapter 4: Motherboard informationChapter 4: Motherboard information
Chapter 4: Motherboard informationChapter 4: Motherboard information
Chapter 4: Motherboard information
6.6.
6.6.
6.
ATX power connectors (24-pin EATXPWR1,ATX power connectors (24-pin EATXPWR1,
ATX power connectors (24-pin EATXPWR1,ATX power connectors (24-pin EATXPWR1,
ATX power connectors (24-pin EATXPWR1,
4-pin ATX12V1)4-pin ATX12V1)
4-pin ATX12V1)4-pin ATX12V1)
4-pin ATX12V1)
These connectors are for ATX power supply plugs. The plugs from the
power supply are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit.
Important notes on the motherboard power requirementsImportant notes on the motherboard power requirements
Important notes on the motherboard power requirementsImportant notes on the motherboard power requirements
Important notes on the motherboard power requirements
• Do not forget to connect the 4-pin ATX +12 V power plug;
otherwise, the system will not boot up.
• To power the motherboard, it is recommended that you use an ATX
12 V Specification 2.0 power supply unit (PSU) with a minimum
350 W power rating. This PSU type has a 24-pin and 4-pin ATX
power plugs.
• If you intend to use a PSU with a 20-pin and 4-pin power plugs,
make sure that the 20-pin power plug can provide at least 15A on
+12 V and that the PSU has a minimum power rating of 350 W. The
system may become unstable or may not boot up if the power is
inadequate. We do not, however, recommend the use of a 20-pin
PSU.
• You must install a PSU with a higher power rating if you intend to
install additional devices.
®
ATX power connectors
EATXPWR1
ATX12V1
+3 Volts
+3 Volts
Ground
+5 Volts
+5 Volts
Ground
Ground
Power OK
+5V Standby
+12 Volts
-5 Volts
+5 Volts
+3 Volts
-12 Volts
Ground
Ground
Ground
PSON#
Ground
+5 Volts
+12 Volts
+3 Volts
+5 Volts
Ground
+12V DC
GND
+12V DC
GND