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SATA Power Output Connector
(4-pin SATA_PWR1)
(see p.8 No. 12)
COM Port Headers
(10-pin COM1)
(see p.8 No. 23)
(10-pin COM2)
(see p.8 No. 21)
(10-pin COM3)
(see p.8 No. 19)
(10-pin COM4)
(see p.8 No. 17)
This motherboard supports RS232/422/485 on COM1 port. Please refer to below
table for the pin deinition. In addition, COM1 port (RS232/422/485) can be adjusted
in BIOS setup utility > Advanced Screen > Super IO Coniguration. You may refer to
page 29 for details.
PIN
Signal
PIN
PIN
Name
10
DUMMY
8
9
DUMMY
7
COM1 Port Pin Deinition
RS232
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
NA/+5V/+12V
+12V
GND
GND
+5V
1
2
1
Signal
Signal
PIN
Name
Name
CCTS#
6
DDSR#
RRTS#
5
GND
RS422
TX-
RX+
TX+
RX-
GND
N/A
N/A
N/A
N/A
18
Signal
Signal
PIN
PIN
Name
Name
4
DDTR#
2
RRXD
3
TTXD
1
DDCD#
RS485
RTX-
N/A
RTX+
N/A
GND
N/A
N/A
N/A
N/A
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