Amazon.com: Lightning to MIDI Cable USB OTG Type B Cable for Select iPhone, iPad Models for Midi Controller, Electronic Music Instrument, Midi Keyboard, Recording Audio Interface, USB Microphone (6FT) : Musical Instruments
USB Camera Adapter, USB 3.0 Female OTG Data Sync Cable Adapter Compatible with Phone 11 X 8 7 / Pad, Support Hubs, MIDI Keyboard, Mouse, Card Reader, USB Ethernet Adapter, iOS 9.2 to 13 (White) - Walmart.com
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Amazon.com: LMUBOY Lightning to USB-B Midi Cable for iPad/iPhone,USB Type B Midi Cord for iPad/iPhone Work with Electronic Music Instrument/Piano/Midi Keyboard/Recording Audio Interface/Organ Drum/USB Microphone : Musical Instruments
Amazon.com: Lighting to MIDI Cable, 6.6FT USB Type B OTG Cable 2.0 iOS Devices Compatible with Select iPhone,Midi Controller, Electronic Music Instrument, Midi Keyboard, Recording Audio Interface, USB Microphone : Musical Instruments
Wholesale iOS OTG USB Adapter, Male to Female USB OTG Extension Cable Compatible iOS 9.2 to 13, Support USB Flash Drive Mouse MIDI Keyboard Electric Piano Drum Microphone Audio Interface Camera 6 Inch (Black)
Yamaha iUX1 USB-MIDI interface for Apple iPhone and iPad devices - ePianos
3in1 USB MIDI Cable 1.5m - Apple iOS & Android - Piano City
Amazon.com: Lightning to MIDI Cable [Apple MFi Certified] USB Type B Cord for iPad/iPhone, Compatible for Midi Controller/Electronic Music Instrument/Piano/Midi Keyboard/Recording Audio Interface/USB Microphone : Musical Instruments