I have made this connection once before to this exact kit. I have given my older MacBook with SP2 to my brother in law who has a Roland TD25. I showed him this setup a few years back. The system works well with my TD30KVPro.
But I cannot get his TD25 to trigger it cna cannot seem to locate why or info on how to remedy it.
I tried the Midi to USB to the Mac. (there’s only 1 Midi out on the back panel).
I tried the USD Type B to USB Typa A ( a printer cable).
I mapped the Midi using EDrums/Roland.
I’m stuck…
Hit me…