This is DB9 Male type connector with facility to solder wires on inner side for making serial cables as per your customized connections.
The?DB9?(originally?DE-9) connector is an analog 9-pin plug of the D-Subminiature connector family (D-Sub or Sub-D).
The DB9 connector is mainly used for serial connections, allowing for the asynchronous transmission of data as provided for by standard RS-232 (RS-232C).
Note that there are DB9-DB25 adapters for easily converting a DB9 plug into a DB25, and vice versa.
|1||CD - Carrier Detect||?|
|2||RXD - Receive Data||?|
|3||TXD - Transmit Data||?|
|4||DTR - Data Terminal Ready||?|
|5||GND - Signal Ground||?|
|6||DSR - Data Set Ready||?|
|7||RTS - Request To Send||?|
|8||CTS - Clear To Send||?|
|9||RI - Ring Indicator||?|
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