7 . 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 fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

• Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will not boot up.

•Use a PSU with a minimum power rating of 300 W on this motherboard. Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.

ATX12V EATXPWR

GND GND

+12V DC +12V DC

ATX power connectors

+3 Volts +3 Volts

-12 Volts +3 Volts

Ground Ground

PSON# +5 Volts

Ground Ground

Ground +5 Volts

Ground Ground

-5 Volts Power OK

+5 Volts +5V Standby

+5 Volts +12 Volts

+5 Volts +12 Volts

Ground +3 Volts

8 . Serial port connector (10-1 pin COM2)

This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis.

COM2

PIN 1

COM port connector

The Serial (COM) port module is purchased separately.

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Chapter 1: Product introduction