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2.2 Pin Assignment
This chapter provides the pin assignments for SUNIX M.2 PCI Express
RS-232 Multi-Port Communication Board, as well as the pin assignments for
the optional accessories.
PIN
DB9M
DB25M
RJ45
Pin Header
DCD
1
8
7
1
RxD
2
3
6
3
TxD
3
2
3
5
DTR
4
20
2
7
GND
5
7
4
9
DSR
6
6
8
2
RTS
7
4
1
4
CTS
8
5
5
6
RI
9
22
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