About 3rd party midi port

[OcttisTony]

Thank you very much for your help, sometimes I have to reduce the HP I carry when traveling, so I just connect directly to the midi port of the case, thank you for your advice, I will also use the midi expander in daily situations because it is always perfect and convenient! I am also considering adding multi I/O, but I really need to sort out whether it is really suitable for me. Thank you for your great work！