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2.6 Onboard Headers and Connectors
Onboard headers and connectors are NOT jumpers. Do NOT place
jumper caps over these headers and connectors. Placing jumper caps
over the headers and connectors will cause permanent damage of the
motherboard!
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.8 No. 7)
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
COM Port Headers
(10-pin COM1~6: see p.8, No. 17)
This motherboard supports RS232/422/485 on COM3, 4 ports. Please refer to below
table for the pin definition. In addition, COM3, 4 ports (RS232/422/485) can be
adjusted in BIOS setup utility > Advanced Screen > Super IO Configuration. You
may refer to page 31 for details.
4
3
2
1
CPU_FAN_SPEED
FAN_SPEED_CONTROL
1
Signal
PIN
PIN
Name
2
RRXD
1
DDCD#
COM3, 4 Port Pin Definition
PIN
RS232
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
PWR
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
Signal
Signal
PIN
Name
Name
4
DDTR#
6
DDSR#
3
TTXD
5
GND
RS422
TX-
RX+
TX+
RX-
GND
N/A
N/A
N/A
PWR
16
Signal
Signal
PIN
PIN
Name
Name
8
CCTS#
10
NC
7
RRTS#
9
PWR
RS485
RTX-
N/A
RTX+
N/A
GND
N/A
N/A
N/A
PWR
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