 9 pin D-SUB MALE connector to the computer1 | Name | Pin | Pin | Name | Receive Data | 2 | 3 | Transmit Data | Transmit Data | 3 | 2 | Receive Data | Data Terminal Ready | 4 | 6 | Data Set Ready | Signal Groung | 5 | 5 | Signal Groung | Data Set Ready | 6 | 4 | Data Terminal Ready | Request To Send | 7 | 8 | Clear To Send | Clear To Send | 8 | 7 | Request To Send | |  9 pin D-SUB MALE connector to the computer2 |