I’d just like to add to this thread for future searchers, be thorough in looking for type A cables/adapters. Avoid the super cheap stuff. In an effort to not spend a fortune on cables, I ordered the “Poyicot” adapters from Amazon. I spent a good hour wondering why I was unable to get any MIDI signal in or out of my Dwarf. I was convinced I just didn’t understand MIDI. On a whim, I checked the wiring of the adapters with a multimeter and the pins were not correctly wired for either Type A or Type B TRS MIDI cables.
TL;DR: Try to find confirmation either in reviews or product info that you are getting Type A devices 