Apogee Electronics GiO - USB Guitar Interface and Controller GIO
Build a USB Midi Footswitch - YouTube
PaintAudio MIDI Captain Foot Controller (GOLD)
MeloAudio MIDI Commander Multi-Effects Portable USB Foot Controller Foot Switch for kemper axefx etc | Reverb
Amazon.com: STRICH Stereo Looper Pedal Guitar Pedal with Built-in Drum Machine, 100 Diverse Drum Patterns, 160 Minutes Recording Time, USB for Audio Import/Export, Support Software Editing Footswitch Control : Musical Instruments