![Amazon.com: Letotech Cross Wired USB Serial Cable DB9 CP2102 ZT232 USB RS232 to DB9 Null Modem Cable PC Control TV Cable (Null Modem Pinout) : Electronics Amazon.com: Letotech Cross Wired USB Serial Cable DB9 CP2102 ZT232 USB RS232 to DB9 Null Modem Cable PC Control TV Cable (Null Modem Pinout) : Electronics](https://m.media-amazon.com/images/I/71o+QE2FviL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Letotech Cross Wired USB Serial Cable DB9 CP2102 ZT232 USB RS232 to DB9 Null Modem Cable PC Control TV Cable (Null Modem Pinout) : Electronics
![Amazon.com: USB to DB9 D-Sub Male Com Port FTDI RS232 Serial Converter Adapter Communication Upgrade Cable (Null Modem DB9 Pinout: 2-TXD .) : Electronics Amazon.com: USB to DB9 D-Sub Male Com Port FTDI RS232 Serial Converter Adapter Communication Upgrade Cable (Null Modem DB9 Pinout: 2-TXD .) : Electronics](https://m.media-amazon.com/images/I/71na2PlfYkL.jpg)
Amazon.com: USB to DB9 D-Sub Male Com Port FTDI RS232 Serial Converter Adapter Communication Upgrade Cable (Null Modem DB9 Pinout: 2-TXD .) : Electronics
![Amazon.com: PL2303TA USB RS232 to DB9 Cross Wired Rollover Null Modem Cable (Standard pinout: 2-RXD, 3-TXD, 5-GND, 7-RTS 8-CTS) : Electronics Amazon.com: PL2303TA USB RS232 to DB9 Cross Wired Rollover Null Modem Cable (Standard pinout: 2-RXD, 3-TXD, 5-GND, 7-RTS 8-CTS) : Electronics](https://m.media-amazon.com/images/I/71VRSwkyeKL.jpg)
Amazon.com: PL2303TA USB RS232 to DB9 Cross Wired Rollover Null Modem Cable (Standard pinout: 2-RXD, 3-TXD, 5-GND, 7-RTS 8-CTS) : Electronics
![RS232 Female/Male Null Modem Cable DB9 FTA Cross/Straight Connection 9 Pin COM Data Cable Converter Extension Cord - AliExpress RS232 Female/Male Null Modem Cable DB9 FTA Cross/Straight Connection 9 Pin COM Data Cable Converter Extension Cord - AliExpress](https://ae01.alicdn.com/kf/Sc0cd80c30a9d4736adbdd116aa733994Q/RS232-Female-Male-Null-Modem-Cable-DB9-FTA-Cross-Straight-Connection-9-Pin-COM-Data-Cable.jpg)