Asus P5A-B User Manual page 29

III. INSTALLATION
9. ATX Power Supply Connector (ATX, 20-pin block)
This connector connects to a ATX power supply. The plug from the power supply
will only insert in one orientation because of the different hole sizes. Find the
proper orientation and push down firmly making sure that the pins are aligned.
IMPORTANT: Make sure that your ATX power supply can supply at least
10mAmp on the 5-volt standby lead (+5VSB). You may experience difficulty in
powering on your system if your power supply cannot support the load. For
Wake on LAN support, your ATX power supply must supply at least 720mAmp.
P5A-B ATX Power Connector
10. AT Power Supply Connector (PS/2, 12-pin block)
This connector connects to a standard 5 Volt power supply. To connect the leads
from the power supply, ensure first that the power supply is not plugged. Most
power supplies provide two plugs (P8 and P9), each containing six wires, two of
which are black. Orient the connectors so that the black wires are together.
P5-A AT Power Connector
At a slight angle, align the plastic guide pins on the lead to their receptacles on
the connector. Once aligned, press the lead onto the connector until the lead
locks into place.
+3.3 Volts
+3.3 Volts
Ground
+5.0 Volts
Ground
+5.0 Volts
Ground
Power Good
+5V Standby
+12.0 Volts
+5V
GND
+12V
PG
Power Connector
on Motherboard
ASUS P5A-B User's Manual
+3.3 Volts
-12.0 Volts
Ground
Power Supply On
Ground
Ground
Ground
-5.0 Volts
+5.0 Volts
+5.0 Volts
P8
-5V
-12V
P9
+5V
Power Plugs from
Power Supply
ORG
RED
YLW
BLU
BLK
BLK
BLK
BLK
WHT
RED
RED
RED
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