![Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics](https://m.media-amazon.com/images/I/510mkG9t8GL._AC_UF350,350_QL80_.jpg)
Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics
![DTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft) DTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft)](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/714glB4EDOL._AC_UF350,350_QL80_.jpg)
DTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft)
![Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics](https://m.media-amazon.com/images/I/61lntfmsH6L._AC_UF894,1000_QL80_.jpg)
Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics
![Amazon.com: ASHATA MDB RS232 MDB Payment Device to PC RS232 Converter for MDB Coin Validator , Banknote Receivers : Electronics Amazon.com: ASHATA MDB RS232 MDB Payment Device to PC RS232 Converter for MDB Coin Validator , Banknote Receivers : Electronics](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51AI6fvw7dL._AC_UF894,1000_QL80_.jpg)
Amazon.com: ASHATA MDB RS232 MDB Payment Device to PC RS232 Converter for MDB Coin Validator , Banknote Receivers : Electronics
![DTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft) DTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft)](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71BiMxseqPL._AC_UF894,1000_QL80_.jpg)
DTech USB to Serial Adapter RS485 RS422 R232 (3 in 1 Interface) Supports DC 5V with Breakout Board LED Lights for Multi-Kind Control Devices Windows 11 10 8 7 XP Mac (5ft)
![Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics Amazon.com: USBGear Mini USB 2.0 to RS-232 DB-9 Serial Adapter w/ 15kV ESD Protection & 3ft. USB Extension Cable : Electronics](https://m.media-amazon.com/images/I/61rywdTOypL.jpg)