Open Terminal and type ls /dev/tty.usbserial-* . You will see a device like /dev/tty.usbserial-ABC123 .
With the correct driver installed, your FT231X-based device will reliably enumerate as a COM port (Windows), /dev/tty.usbserial (macOS), or /dev/ttyUSB0 (Linux). Whether you're debugging an embedded system, programming an ESP32 via a serial adapter, or building a custom USB peripheral, a properly installed FT231X driver is your foundation for stable communication.
echo "ftdi_sio" | sudo tee -a /etc/modules