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10.
Speaker connector (4- pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
P5N73-AM Speaker Out Connector
11.
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to fit these connectors in only one orientation. Find the proper orientation and
push down firmly until the connectors completely fit.
P5N73-AM ATX Power Connector
• DO NOT forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will
• We recommend that you use a power supply unit (PSU) with a higher power output
• Ensure that your PSU can provide at least the minimum power required by your system.
• If you intent to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin
1-24
+12V DC
GND
not boot.
when configuring a system with more power-consuming devices when you intend to
install additional devices. The system may become unstable or may not boot up if the
power is inadequate.
power plug can provide at least 15A on +12V 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.
SPEAKER
1
ATX12V
+3 Volts
+12V DC
GND
+12 Volts
+12 Volts
+5V Standby
Power OK
Ground
+5 Volts
Ground
+5 Volts
Ground
+3 Volts
+3 Volts
EATXPWR
Ground
+5 Volts
+5 Volts
+5 Volts
-5 Volts
Ground
Ground
Ground
PSON#
Ground
-12 Volts
+3 Volts
Chapter 1: Product introduction
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