I just tried connecting only with DIN, but Control simply says device not found. When I try to manually select a device, and choose my midi device, I get the "H9 Control was unable to open the MIDI in port input for the device…" error. This happens for both my midi devices (my focusrite audio interface and a novation SL midi controller). It seems that Control can only communicate with the H9 over USB. Is this normal? Or should it be able to run over DIN without the USB?