MIDI controller keyboards use a single USB cable connected to your computer to both power the keyboard and transmit the MIDI data that tells the computer what keys you’re pressing as you play.
Because they’re normally designed to work with DAW’s and software instruments that generate sound within your computer, many controller keyboards make no sounds of their own, but for use with online piano teaching sites they’ll work just as well as a MIDI-capable digital piano or keyboard with its own onboard sounds and built-in speakers.
The best keyboards will have a socket on the rear for a sustain pedal, an important consideration when learning proper piano technique. Listed below are a few choice examples of MIDI controller keyboards that will help you get the most out of your online piano learning experience.