Already connected ports are removed from the list. Problem with linux is that each port appears 3 times with different names (dev/.., /dev/serial/by-id/.. and /dev/serial/by-path). We can not hide them as well as we do not know the dependencyies. But if you always use e.g. by-path it must be one of the appearing if all other printers are connected.
Adding names of all the configs using same port might be a nice addon. Will see if information is available.
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Adding names of all the configs using same port might be a nice addon. Will see if information is available.