User Manual

ASUS P9A-I Series
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3. CPU and front fan connectors (4-pin CPU_FAN1, FRNT_FAN1~4)
The fan connectors support cooling fans. 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. Insufcient air ow
inside the system may damage the motherboard components.
• These are not jumpers! DO NOT place jumper caps on the fan connectors!
• All fans feature the ASUS Smart Fan technology.
4. Serial port connector (10-1 pin COM1)
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.
P9A-I
P9A-I Serial port connector
PIN 1
COM1
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
P9A-I
P9A-I Fan connectors
CPU_FAN1
PWM
SENSE
VCC
GND
FRNT_FAN1
FRNT_FAN2FRNT_FAN4
GND
VCC
SENSE
PWM
FRNT_FAN3
GND
VCC
SENSE
PWM
A
A
B
C
D E
B
C
D
E
PWM
SENSE
VCC
GND
PWM
SENSE
VCC
GND