Iconnectivity answer :
"Hi, thanks for contacting us.
Our USB-A host ports only accept USB class compliant MIDI controllers sending only MIDI/SysEx data. It would seem the MIDI fighter was within this spec and the new Electra One might be outside of this.
Many MIDI controllers do have different ports/modes they can go into that might send different information. I would recommend speaking with electra to ask about this. They may have a more generic MIDI mode that will allow the device to be seen in our host port."
Then, I precised that Electra One is an USB class compliant midi controller which sends midi/SysEx data. See their answer bellow :
“Interesting. Do you know if they might be using a Teensy Arduino in it?
Have you tried connecting our interface into the host port on the ONE?
Does the One recognize our interface properly?”
I don’t know about the arduino and didn’t test what they’re asking for yet.
Happy new year !