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Laipac Technology Inc.
5.6
DB9 RS232 and USB Connector Pinout
Note: The pins are marked on each connector in fine print
© 2002-2007 by Laipac Technology Inc. All Rights Reserved.
Pin
1
2
3
4
RS232
5
6
7
8
9
1
2
Data (-)
USB
3
Data (+)
4
M2M 3350 User's Manual & Reference Guide
EIA
Designation
DCD
Data Carrier Detect
RXD
Receive Data
TXD
Transmit Data
DTR
Data Terminal Ready
GND
Ground
DSR
Data Set Ready
RTS
Request to Send
CTS
Clear to Send
VCC
+5V
VCC
+5V
Data (-)
Data (+)
GND
Ground
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