This is a compatible or remanufactured Lexmark 78C1UM0 toner cartridge guaranteed to perform with Lexmark Laser Printers. It replaces the genuine (OEM) Lexmark 78C1UM0 toner cartridge. This toner cartridge is made with top quality components and new toner to give you the highest quality printouts every time. This compatible or remanufactured for Lexmark 78C1UM0 toner cartridge is specially engineered to meet or exceed the highest standards of quality, reliability and page yields. Although this cartridge is not made or endorsed by Lexmark, it offers customers an economical alternative to expensive OEM Lexmark 78C1UM0 cartridges and comes with our satisfaction guarantee.