I am using a Miditech MIDIface 4x4.
I select an external Instrument - I use a jv1010 for Testing. Well: On Midi-Out-Port 1 all works fine. Midi-Data is received by the JV.
But when I use Midi-Out-Port2 no Midi-Data is transmitted from the Miditech MIDIface 4x4 to the synth. All is setup to midi-Channel 1.

The Midiface works fine I guess. Cause I have the same Problem with the novation Zero SL Mk2 Port 2. Something on the setup seems to be wrong but I can`t figure out what this could be.
Please help! Thanks! Chris