When plugged in ESP boards might use different tty ports, based upon the UART chipset and driver used. Some examples:

• original ESP32-Devkit-WROOM –> /dev/ttyUSB0
• ESP32-C3 mini –> /dev/ttyACM0

To find out which port is used, run the following command and unplug/plug the ESP32 board:

sudo udevadm monitor -u