Windows Longhorn was Microsoft's codename for the operating system developed between Windows XP and its eventual release as Windows Vista in 2007. Leaked and preview builds circulated among enthusiasts for years, preserving interface sounds that never reached the final retail version in the same form. The hardware insert chime survived through recordings, forums and soundboards, becoming a nostalgic reference for PC hobbyists. Today it is reused in setup tours, repair videos and retro computing posts as an instantly recognisable shorthand for a successful connection.