TEL0070 - Dfrobot - Multi USB/RS232/RS485/TTL Converter, for Arduino Board
工業用グレードUSB RS485 USB RS422 USB RS232 ftdiチップ絶縁信号変換モジュールUSB 232/485/422磁気絶縁|Connectors| - AliExpress
900020 Interface-Audio-USB-RS232-RS485-MOT Funktronic | Industriefunk vom Profi | WD Kommunikationsgeräte GmbH
Witmotion Uart Convert Usb To Ttl Rs485 Rs232 And Ttl To Rs232 Rs485 And Rs232 To Rs485 Cp2102 3.3 & 5v Input Serial Converter - Smart Activity Trackers - AliExpress
Multi-Port Industrial USB to Serial Converter with Isolation