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38 ASUS P3B-F User’s Manual
3. HARDWARE SETUP
Connectors
3. H/W SETUP
22) ATX Power Supply Connector (20-pin ATXPWR)
This connector connects to an 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 but gently making sure that
the pins are aligned.
R
P3B-F
P3B-F ATX Power Connector
+3.3 Volts
-12.0 Volts
Ground
Power Supply On
Ground
Ground
Ground
-5.0 Volts
+5.0 Volts
+5.0 Volts
Power Goo
d
+12.0 Volts
+3.3 Volts
+3.3 Volts
Ground
+5.0 Volts
Ground
+5.0 Volts
Ground
+5V Stand
b
ATXPWR
IMPORTANT: Make sure that your ATX power supply can supply at least 10mA
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, keyboard wake up, and suspend-to-RAM support, your ATX power sup-
ply must supply at least 720mA +5VSB.
23) Power Supply Thermal Sensor Connector
If you have a power supply with thermal monitoring, connect its thermal sensor
cable to this connector.
R
P3B-F
P3B-F Thermal Sensor Connector
JTPWR
Power Supply Thermal Sensor Connector