I'm in the middle of a double whammy - setting up my first Linux distro (Mint), and setting up Cura 4.13.1. I have a printer I built years ago, essentially a Prusa clone with a Ramps controller running Repetier firmware, which I have added as a non-networked Custom FFF printer. My confusion is, how do I tell Cura how to talk to this thing? It is connected via USB and I've been able connect to it with a Linux version of Repetier Host, but I don't see where in Cura I can enter anything like port ID and baud rate. I get the feeling I've missed something obvious, but I have indeed missed it completely.