The Lexmark Unison 801SY Toner Cartridge is designed for use with Lexmark printers, specifically the model 80C1SY0. This toner cartridge is in yellow color and utilizes laser print technology to deliver high-quality prints. It is compatible with Lexmark printers and is a genuine Lexmark product, ensuring optimal performance and reliability. Perfect for those looking to replace their yellow toner cartridge with a genuine Lexmark product for consistent and professional printing results.