The product is a sealed 3.5" disk containing an upgrade from Microsoft MS-DOS 6.0 to 6.2 Step-Up. This operating system upgrade is specifically designed for Microsoft DOS operating systems and was manufactured in the United States. It provides users with a convenient way to update their existing MS-DOS operating system to the newer version, offering improved features and functionality. This product is a reliable choice for those looking to enhance their computer's performance and stay current with the latest updates from Microsoft.