so update; I tried several different USB cables, different USB ports, and tried two computers, both on MacOS, Logic Pro X. The Keystep Pro just light up lots of notes and can not behave when USB is connected to the computer, not able to read the midi notes from DAW. When using my Midi interface instead to Keystep Pro by 5pin Midi cable all works fine. But I want to send MIDI through the USB instead. Has anyone got same problem and how was it solved?