This is a compatible Canon E40 toner cartridge guaranteed to perform with Canon laser printers. It replaces the genuine (OEM) Canon E40 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 Canon E40 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 Canon, it offers customers an economical alternative to expensive OEM Canon E40 cartridges and comes with our satisfaction guarantee.