Viditech ModBus/USB (RS485/USB) Converter : Amazon.co.uk: Business, Industry & Science
Anybus AB7659 Profinet Slave/Modbus-RTU Slave Gateway Ethernet, USB 24 V DC 1 pc(s) | Conrad.com
VSCOM - Data Communication, VS NetCom product family, Serial Device Server, USB to Serial, PCI to Serial, PCI Express to Serial, Connectivity Solutions, Embedded Systems
Dongle Kit for Modbus RTU RS-485 to USB, RS-485 to USB Dongle Modbus RTU RS-485 RS-485 to USB - Buy China Modbus RS485 Adapter on Globalsources.com
Raspberry Pi 3 Model B Modbus RS-485 to Modbus TCP/IP Gateway | by BoonsanTi | Medium
Modbus to USB converter
USB to RS485/Modbus RTU Converter
ModBUS RTU/TCP-IP to M-BUS gateway/protocol converter: Z-KEY-MBUS
USB to Modbus-RTU - Dyacon
Read a MODBUS temperature sensor through USB-RS485 adapter on Ubuntu and Raspberry Pi