Aaeon PICO-WHU4, User Manual

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Chapter 2 – Hardware Information 13
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2.4.2 COM Port 1/ COM Port 2 (CN2)
Pin Pin Name Signal Type Signal Level
1 NC NC NC
2 NC NC NC
3 GND GND GND
4 NC NC NC
5 DCDA IN
6 DCDB IN
7 RXA IN
8 RXB IN
9 TXA OUT ±9V
10 TXB OUT ±9V
11 DTRA OUT ±9V
12 DTRB OUT ±9V
13 DSRA IN
14 DSRB IN
15 RTSA OUT ±9V
16 RTSB OUT ±9V
17 CTSA IN
18 CTSB IN