These sounds are best known as operating system device alerts, especially from Windows PCs where they signal hardware being connected or removed. Over time, they became recognizable beyond normal computer use because they show up in repair videos, gaming streams, and meme edits about broken cables or flaky ports. People still use them because the meaning is immediate: one tone suggests something is working, and the other suggests it just stopped. That makes them useful alongside an error sound or a Discord notification in tech-themed content.