USB to MIDI Music Keyboard Interface Converter Cable for Alesis keyboards Simply connect the USB cable into your computer, and your MIDI interface connection is completed. Easy to turn your PC into a music studio, start by connecting a music keyboard to your computer with the supplied USB MIDI Cable. 16 MIDI input channels ,16 MIDI output channels. LED's indicate power on,MIDI in signal and MIDI out signal. Make Music recording by connecting a music keyboard to your computer with the USB MIDI cable with input/output.