> MIDI is just a protocol, it doesn't care which cable it gets sent over, as long as both ends of the cable know which message transport system if being used.

> MIDI is just a protocol, it doesn't care which cable it gets sent over, as long as both ends of the cable know which message transport system if being used. Strictly speaking, no. MIDI also specifies the mechanical and electrical connections. There is a MIDI USB device class specification, but that's not an implementation of the MIDI 1.0 standard and just roughly corresponds to its packet protocol.