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2-32 Chapter 2: Hardware information
8. ATX power connectors
(24-pin EATXPWR, 8-pin EATX12V)
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.
CROSSHAIR
ATX12V
EATXPWR
+3 Volts
+3 Volts
Ground
+5 Volts
Ground
+5 Volts
Ground
Power OK
+5V Standby
+12 Volts
+12V DC
+12V DC
+12V DC
+12V DC
GND
GND
GND
GND
+12 Volts
+3 Volts
+3 Volts
-12 Volts
Ground
PSON#
Ground
Ground
Ground
-5 Volts
+5 Volts
+5 Volts
+5 Volts
Ground
CROSSHAIR ATX power connectors
•
For a fully congured system, we recommend that you use a power supply
unit (PSU) that complies with ATX 12 V Specication 2.0 (or later version)
and provides a minimum power of 600 W.
• Do not forget to connect the 8-pin ATX +12 V power plug; otherwise, the
system will not boot.
• To support an AMD
®
Dual-Core CPU,make sure that the PSU can provide
at least 16 A and 19 A peak on the +12V_2 lead.
• Use of a PSU with a higher power output is recommended when conguring
a system with more power-consuming devices. The system may become
unstable or may not boot up if the power is inadequate.