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COM1, 2 Headers
(9-pin COM1, COM2: see p.8, No. 23)
* 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.
PIN
1
2
3
4
5
6
7
8
9
10
ESPI Header
(19-pin ESPI1)
(
see p.8, No. 22)
Digital Input / Output Pin Header
(10-pin JGPIO1: see p.8, No. 21)
PIN Signal Name PIN
JGPIO_PWR
9
10
1
2
Signal
Signal
PIN
PIN
Name
Name
1
DDCD#
3
TTXD
2
RRXD
4
DDTR#
COM1 Port Pin Definition
RS232
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
NC
9
1
10
2
Signal
Name
7 SIO_GP37
GND
8
GPP_E16
20
Signal
PIN
PIN
Name
5
GND
7
6
DDSR#
8
RS422
TX-
RX+
TX+
RX-
GND
N/A
N/A
N/A
N/A
NC
Signal
Signal
PIN
PIN
Name
Name
5
SIO_GP36
3
SIO_GP35
6
GPP_E15
4
GPP_E5
Signal
Signal
PIN
Name
Name
RRTS#
9
RRI#
CCTS#
10
NC
RS485
RTX-
N/A
RTX+
N/A
GND
N/A
N/A
N/A
N/A
NC
PIN Signal Name
1
SIO_GP34
2
GPP_E4
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