Aaeon EMB-QM87A User Manual Page 28

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Mini-ITX EMB-QM87A
Chapter 2 Quick Installation Guide 2 - 14
7
RTS1
8
CTS1
9
RI1/5V/12V
10
RS-422
Pin Signal Pin Signal
1
RS422_TX-
2
RS422_RX+
3
RS422_TX+
4
RS422_RX-
5
GND
6
NC
7
NC
8
NC
9
NC/5V/12V
10
RS-485
Pin Signal Pin Signal
1
RS485_D-
2
NC
3
RS485_D+
4
NC-
5
GND
6
NC
7
NC
8
NC
9
NC/5V/12V
10
Note: The max. rating of pin9 is 1A @ 5V & 12V
2.17 COM Port Box Header (COM2~6)
Pin Signal Pin Signal
1
DCD
2
RXD
3
TXD
4
DTR
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