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