1

SHIELD

Shield Ground

2

TXD

Transmit Data

3

RXD

Receive Data

4

RTS

Request to Send

5

CTS

Clear to Send

6

DSR

Data Set Ready

7

GND

System Ground

8

CD

Carrier Detect

9

n/c

10

n/c

11

n/c

12

n/c

13

n/c

14

n/c

15

n/c

16

n/c

17

n/c

18

n/c

19

n/c

20

DTR

Data Terminal Ready

21

n/c

22

RI

Ring Indicator

23

n/c

24

n/c

25

n/c