[6] COM2 Header (5*2 Pin 2.54mm)
Location
Header
Pin
Definition
Pin
Definition
1
DCD
2
DSR
3
RXD
4
RTS
J_COM2
5
TXD
6
CTS
7
DTR
8
RI
9
GND
[7] COM3-6 Headers
（
20*2 Pin 2.00 mm
）
Location
Header
Pin
Definition
Pin
Definition
1
COM3_DCD
2
COM3_RXD
3
COM3_TXD
4
COM3_DTR
5
GND
6
COM3_DSR
7
COM3_RTS
8
COM3_CTS
9
COM3_RI
10
GND
11
COM4_DCD
12
COM4_RXD
13
COM4_TXD
14
COM4_DTR
15
GND
16
COM4_DSR
17
COM4_RTS
18
COM4_CTS
COM3-6
19
COM4_RI
20
21
COM5_DCD
22
COM5_RXD
23
COM5_TXD
24
COM5_DTR
25
GND
26
COM5_DSR
27
COM5_RTS
28
COM5_CTS
29
COM5_RI
30
GND
31
COM6_DCD
32
COM6_RXD
33
COM6_TXD
34
COM6_DTR
35
GND
36
COM6_DSR
37
COM6_RTS
38
COM6_CTS
39
COM6_RI
40
GND
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