This sound comes from the Windows 7 system audio set and is associated with disconnecting USB hardware from a PC. Like other classic Windows notification noises, it spread beyond its original purpose through screen recordings, memes, and short-form edits. Creators still use the Windows 7 USB disconnect sound because it is instantly understood as a sign that something was removed, broken, or cut off, especially in gaming clips, desktop jokes, and retro-tech themed content.