Ftdi Chip Isolated Usb To Ttl/rs232/rs485 3 In 1 Serial Port Adapter Industrial-grade Ttl Rs-232 Rs-485 Isolation - Pc Hardware Cables & Adapters - AliExpress
Amazon.com: 5PCS RS-485 MAX485 Chip Module TTL to RS-485 Module SCM Development Accessories Board : Electronics
Overvoltage Protection for Harsh Industrial Environments: An Analog Devices RS485/RS422 Transceiver - News
RS485 Driver
USB to RS485-RS422 converter with FTDI Chip and USB Cable