| http://www.w3.org/ns/prov#value | - It is used to directly connect various MIDI devices to each other.A MIDI interface is a device that translates between MIDI and USB. It has electronics (in the box you called the hub) to do the processing, and of course, it also includes the connectors that allow you to attach it to the MIDI device as well as to the USB port of your computer.
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