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ASUS M3A78-EM 1-37
Never connect a USB cable to the IEEE 1394a connector. Doing so will damage
the motherboard!
You can attach a FireWire/1394 cable to this connector if your chassis suppots
the front panel IEEE1394 port. Connect the 1394 cable to ASUS Q-Connector
(1394, red) rst, and then install the Q-Connector (1394) to the 1394 connector
onboard.
13. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for an ATX power supply. The plugs from the power
supply are designed to t these connectors in only one orientation. Find the
proper orientation and push down rmly until the connectors completely t.
•
We recommend that you use an ATX 12 V Specication 2.0-compliant
power supply unit (PSU) with a minimum of 300 W power rating. This PSU
type has 24-pin and 4-pin power plugs.
•
If you intend to use a PSU with 20-pin and 4-pin power plugs, make sure
that the 20-pin power plug can provide at least 15 A on +12 V and that
the PSU has a minimum power rating of 300 W. The system may become
unstable or may not boot up if the power is inadequate.
•
Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the
system will not boot up.
• We recommend that you use a PSU with higher power output when
conguring a system with more power-consuming devices. The system
may become unstable or may not boot up if the power is inadequate.
• If you are uncertain about the minimum power supply requirement for your
system, refer to the Recommended Power Supply Wattage Calculator
at http://support.asus.com/PowerSupplyCalculator/PSCalculator.
aspx?SLanguage=en-us for details.
•
You must install a PSU with a higher power rating if you intend to install
additional devices.
M3A78-EM ATX Power Connector
R
M3A78-EM
EATXPWR
+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
GND
+12V DC
GND
+12V DC
ATX12V