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4.
CPU, power, and chassis fan connectors (3-pin CPU_FAN, 3-pin PWR_FAN, 3-pin
CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the
system may damage the motherboard components. These are not jumpers! Do not place
jumper caps on the fan connectors!
AT3IONT-I SERIES fan connectors
5.
Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that supports
either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel
audio I/O module cable to this connector.
AT3IONT-I SERIES Analog front panel connector
• We recommend that you connect a high-definition front panel audio module to this
connector to avail of the motherboard's high-definition audio capability.
• If you want to connect a high-definition front panel audio module to this connector, set
the Front Panel Select item in the BIOS setup to [HD Audio]. If you want to connect an
AC'97 front panel audio module to this connector, set the item to [AC97]. By default, this
connector is set to [HD Audio]. See section 2.4.4 Onboard Devices Configuration for
details.
1-13
CPU_FAN
Rotation
+12V
GND
PWR_FAN
Rotation
+12V
GND
CHA_FAN
Rotation
+12V
GND
AAFP
PIN 1
HD-audio-compliant
pin definition
PIN 1
Legacy AC'97
compliant definition
Chapter 1: Product introduction