![Amazon.com: Antrader 30CM/1Ft RS-232 Serial Cable 9 Pin DB9 Male Gender Changer Coupler Connector to 2.54mm 9 x Single Jumper Wires Adapter Cable Pack of 4 : Electronics Amazon.com: Antrader 30CM/1Ft RS-232 Serial Cable 9 Pin DB9 Male Gender Changer Coupler Connector to 2.54mm 9 x Single Jumper Wires Adapter Cable Pack of 4 : Electronics](https://m.media-amazon.com/images/I/61FxeGdL75L._AC_SL1500_.jpg)
Amazon.com: Antrader 30CM/1Ft RS-232 Serial Cable 9 Pin DB9 Male Gender Changer Coupler Connector to 2.54mm 9 x Single Jumper Wires Adapter Cable Pack of 4 : Electronics
![2pcs Female RS232 Connect Cable DB9 Serial Port to DuPont 2.54mm 9* 1Pin Data Download Cable jumper Test DB9 Cable 30cm|Computer Cables & Connectors| - AliExpress 2pcs Female RS232 Connect Cable DB9 Serial Port to DuPont 2.54mm 9* 1Pin Data Download Cable jumper Test DB9 Cable 30cm|Computer Cables & Connectors| - AliExpress](https://ae01.alicdn.com/kf/H10bfe3ede7a64c639bf63a4e3c5a23cfg.png)
2pcs Female RS232 Connect Cable DB9 Serial Port to DuPont 2.54mm 9* 1Pin Data Download Cable jumper Test DB9 Cable 30cm|Computer Cables & Connectors| - AliExpress
![5pcs DC5V MAX3232 MAX232 RS232 To TTL Serial Communication Converter Module With Jumper Cable Geekcreit for Arduino - products that work with official Arduino boards 5pcs DC5V MAX3232 MAX232 RS232 To TTL Serial Communication Converter Module With Jumper Cable Geekcreit for Arduino - products that work with official Arduino boards](https://www.renhotecic.com/image/cache/catalog/Converter-Board/5pcs-DC5V-MAX3232-MAX232-RS232-To-TTL-Serial-Communication-Converter-Module-With-Jumper-Cable-Geekcr-1637153-5498-270x270.jpeg)