Amazon.com: Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments : Electronics
USB to RS232 TTL | CMOS Adapter Cable with Terminal Block
FTDI Serial TTL-232 USB Type C Cable - 3V Power and Logic : ID 4331 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Multi USB-RS232-RS485-TTL Converter - DFRobot
WitMotion USB to TTL/232/485 UART Converter Cable with CH340 Chip, Ter