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connector wiring scheme

9 pin D-SUB female connector layout 9 pin D-SUB female connector

9 pin D-SUB male connector diagram 9 pin D-SUB male connector

Pin Name Dir Description
1 CD IN Carrier Detect
2 RXD IN Receive Data
3 TXD OUT Transmit Data
4 GND - System Ground
5 CTS IN Clear to Send
6 DSR IN Data Set Ready
7 RI IN Ring Indicator
8 RTS OUT Request to Send
9 DTR OUT Data Terminal Ready


  • Direction is DTE (Computer) relative DCE (Scanner).


Category:Computer Peripheral Connectors


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