That’s a MIDI keyboard controller—specifically an M-Audio Keystation 49e.
It’s not a standalone piano with built-in sounds. Instead, it’s designed to plug into a computer (usually via USB) and control music software (DAWs like GarageBand, Ableton, etc.). The keys send digital signals, letting you play virtual instruments like pianos, synths, drums, and more.
A couple of clues from your photo:
* The “M-Audio” label and model name on the right
* The simple control knobs/sliders (volume, modulation, pitch bend)
* No speakers or display (typical for MIDI controllers)