This chime comes from Windows 10, the Microsoft operating system released in 2015, where it plays as a system notification when a USB device is safely removed or unplugged. As screen recordings, tech tutorials and gaming clips spread online, viewers began to recognise the two-note cue outside its original context. Editors now borrow it as a visual joke in its own right, using the familiar Windows sound to imply that someone, or something, has just been disconnected, which keeps it useful long after Windows 10 itself has faded from everyday use.