This toner cartridge is unique to this printer. Toner cartridges intended for use other printers cannot be used. For use with the Lexmark Optra SC 1275 and 1275n colour printers. Yield: Up to 4,500 pages @ approximately 5% coverage.Compatible Printers: Lexmark Optra SC 1275 C, Lexmark Optra SC 4050, Lexmark Optra SC 1275 N, Lexmark Optra SC 1275, Lexmark Optra SC 1275 M, Lexmark Optra SC 1200 Series, Lexmark 5040-001, Lexmark Optra SC 1275 Series, Lexmark Optra SC 1275 N SOL