The MIDI USB Host mk3 from Kenton is a USB-MIDI converter for Class Compliant USB-MIDI keyboards with which you can expand USB pianos, which are exclusively equipped with a USB port, with a MIDI-In and MIDI-Out jack. So this allows to use the keyboards not only on the computer, but also to control older synthesizers or sound modules, samplers, etc. with the USB keyboard. In addition, it can be operated as a USB-MIDI interface directly on the computer. Power is supplied via a 5 volt power supply, which is included in the scope of delivery.