20
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.8,
No. 9)
Though this motherboard
provides a 4-Pin CPU fan
(Quiet Fan) connector, 3-Pin
CPU fans can still work suc-
cessfully even without fan
speed control. If you plan to
connect a 3-Pin CPU fan,
please connect it to Pin 1-3.
Serial Port Header
(9-pin COM3)
(see p.8, No. 26)
(9-pin COM4)
(see p.8, No. 25)
(9-pin COM5)
(see p.8, No. 24)
(9-pin COM6)
(see p.8, No. 23)
These COM headers sup-
port serial port modules.
3W Audio AMP Output Wafer
(4-pin SPEAKER1)
(see p.8,
No. 31)
PIN
Signal Name
1
SPK L-
2
SPK L+
3
SPK R+
4
SPK R-
Chassis Fan Connector
(3-pin CHA_FAN1)
(see p.8,
No. 21)
Please connect a fan cable
to the fan connector and
match the black wire to the
ground pin.
GND
+12V
CPU_FAN_SPEED
FAN_SPEED_CONTROL
G
ND
+12V
CHA_FAN_SPEED
1
CCTS#1
RRI#1
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRTS#1
