Originally Posted By jamman
...Your typical Midi to USB ( computer) will not work due to lack of power supply.

https://www.sweetwater.com/store/detail/MIDIExpand--keith-mcmillen-instruments-midi-expander?mrkgcl=28&mrkgadid=3301332467&rkg_id=0&product_id=MIDIExpand&campaigntype=shopping&campaign=aaShopping%20-%20SKU%20-%20Studio%20%26%20Recording&adgroup=Studio%20Mixers%20%26%20Control%20Surfaces%20-%20Keith%20McMillen%20Instruments%20-%20midiexpand&placement=google&adpos=1o2&creative=280136033989&device=m&matchtype=&network=g&gclid=EAIaIQobChMIhYHexJr84wIVGNtkCh0JZABGEAQYAiABEgJg_fD_BwE
The Keith McMillen Instruments MIDI Expander works only for the Softstep and some other devices by Keith McMillen. The description on Sweetwater is wrong. I use USB MIDI converters by this company based in Spain. https://compasflamenco.com/midi-c-3/
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"You Shall Know the Truth, and the Truth will set you free." John 8:32