The sound comes from Microsoft Windows, where a short descending chime signals that a USB device has been removed or disconnected. Windows users hear it during everyday computer use, so it carries an instant meaning even without any picture. Louder, exaggerated versions later spread on soundboards and in short-form videos, where creators use the familiar system noise as a joke about something ending abruptly. Its popularity comes from that recognition: almost anyone who has used a PC knows what the disconnect means.