Port for Debian/Ubuntu

How can I find which port to choose for sending data to the robot? I am running Linuxmint Debian Edition. Any help is much appreciated

EDIT: nvm pipeep gave me a link to an article that describes how to do it. If anyone needs it this is the link https://github.com/bmcdorman/CBCDownloader/wiki/USB-Setup and you can skip the apt-get install step as its only for CBCDownloader