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Serial port 1/ 2 connector (jcom1/ jcom2) – Avalue EPI-QM67 User Manual

Page 15

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Quick Installation Guide

EPI-QM67 Quick Installation Guide 15

2.3.9

Serial port 1/ 2 connector (JCOM1/ JCOM2)

Signal

PIN

IN

Signal

NC

20

19

RI2

CTS2

18

17

RST2

DSR2

16

15

GND

DTR2

14

13

TXD2

RXD2

12

11

DCD2

NC

10

9

RI1

CTS1

8

7

RST1

DSR1

6

5

GND

DTR1

4

3

TXD1

RXD1

2

1

DCD1

2.3.10

Serial port 1/2 in RS-422/485 mode connector (J422/1)

Signal

PIN PIN

Signal

GND

6

5

+5V

RX+

4

3

TX+

RX-

2

1

TX-

Note:

J422/1 is available after

modifying the mode of COM2 in BIOS setting.

JCOM1/JCOM2