The product is a vintage 1991 CompuAdd system manual set, specifically for the 286/12, 286/10, 386, and 80486 Mainboard Guides. The manuals are in English and are multicolored, providing comprehensive guidance for users of CompuAdd products. These manuals are compatible with the CompuAdd brand and are designed for specific models like the 316S. Made in the United States, this set of manuals is a valuable resource for individuals looking to learn more about and troubleshoot their CompuAdd systems.