I am using the esphome add-on and I want to use the USB programming from the the addon. It brings up the wrong serial device. I need to change it to ttyUSB0. How/where can I do that? It chose another serial device which is my Zwave USB I think. Any help appreciated. 
Where the serial device is listed at the top right of the GUI should be a drop down box.
Thank you. I looked there and it was not there. It was in system h/w. I rebooted and same result. then I unplugged and replugged the programmer. Then it showed up in the pull down. Thanks for your help. I expected it in the pull down but it took some doing to get it there 