Amazon.com: HQRP USB in-Out MIDI Interface Cable Converter PC to Music Keyboard Adapter Cord Works with Yamaha PSR-225GM 61 Key Educational Keyboard : Musical Instruments
How to connect my YAMAHA synthesiser (PSR-550) to the laptop to make it work as a MIDI device - Quora
Yamaha 4.9' USB to Apple 30-Pin MIDI Interface Cable I-UX1 B&H