(rollers are a bit sticky) The M-Audio Keystation 49-ES USB MIDI Controller Keyboard in black is a digital keyboard controller with 49 keys, USB in/output ports, and a pedal input. It is designed for musicians and producers looking for a compact and versatile controller for creating music. The M-Audio brand is known for producing reliable and high-quality audio equipment, making this keyboard a reliable choice for anyone in need of a digital controller. Its USB compatibility allows for easy connectivity to a variety of software and devices, making it a versatile tool for any music enthusiast.