10873: Serial Data Cable, 9-Pin Female to 9-Pin Male
10pcs/lot) RS232 Parallel Serial Port DB9 9 Pin D Sub Male/Female Solder Connector + Plastic Shell Cover|connector cover|db9 serial port connectordb9 female connector - AliExpress
9Pin DB9 Solderless Terminal Female/ Male RS232 RS485 Adapter Connector
What are the Pinouts of the 9 pin D connector for my RS232 or RS422/485 port? | Brainboxes