
17
JGPIO1 (Digital Input / Output Pin Header)
COM1/2/3/4 (COM Port Header)
NOTE:
This system 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
Pin
Signal
Pin
Signal
1
SIO_GP24
2
SIO_GP20
3
SIO_GP25
4
SIO_GP21
5
SIO_GP26
6
SIO_GP22
7
SIO_GP27
8
SIO_GP23
9
JGPIO_PWR
10
GND
Pin
Signal
Pin
Signal
2
RRXD
1
DDCD#
4
DDTR#
3
TTXD
6
DDSR#
5
GND
8
CCTS#
7
RRTX#
10
DUMMY
9
DUMMY
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