19
COM Port Headers
(10-pin COM1, COM2, COM3, COM4)
(see p.9 No. 20)
SATA Power Output Connector
(4-pin SATA_PWR1)
(see p.9 No. 15)
PIN
RS232
RS422
RS485
1
DCD
TX-
RTX-
2
RXD
RX+
N/A
3
TXD
TX+
RTX+
4
DTR
RX-
N/A
5
GND
GND
GND
6
DSR
N/A
N/A
7
RTS
N/A
N/A
8
CTS
N/A
N/A
9
NA/+5V/+12V
N/A
N/A
This motherboard supports RS232/422/485 on COM1 port. Please refer to below
table for the pin definition. In addition, COM1 port (RS232/422/485) can be adjusted
in BIOS setup utility > Advanced Screen > Super IO Configuration. You may refer to
page 29 for details.
COM1 Port Pin Definition
ATX Power Connector (Input 9V-36V)
Please connect a DC power
(4-pin ATX12V1)
supply (9V-36V) to this
(see p.9 No. 18)
connector.
1-4 : GND
2-3 : DC Input
1
GND
+5V
+12V
GND
1
1
2
PIN
Signal
Name
PIN Signal
Name PIN
Signal
Name PIN
Signal
Name
PIN Signal
Name
1
DDCD#
3
TTXD
5
GND
7
RRTS#
9
DUMMY
2
RRXD
4
DDTR#
6
DDSR#
8
CCTS#
10 DUMMY
Digital Input/Output Pin Header
(10-pin JGPIO1)
(see p.9 No. 26)
PIN Signal Name PIN Signal Name
10
GND
9
JGPIO_PWR
8
SIO_GP23
7
SIO_GP27
6
SIO_GP22
5
SIO_GP26
4
SIO_GP21
3
SIO_GP25
2
SIO_GP20
1
SIO_GP24
1
2
1
2
9
1
0
9
10