The sound comes from the default Windows 7 sound scheme released by Microsoft in 2009, where it played as the Device Connect notification when hardware was added. As Windows 7 became the dominant desktop system for years, the tiny chime was heard billions of times in homes, schools and offices. Clips of it later circulated on soundboards and in meme edits long after newer Windows versions changed the scheme, kept alive by nostalgia for that era of PCs and by its perfect timing for plug in jokes.