The Genuine HP LaserJet CE278AC Black Toner Cartridge 78A is a high-quality printer accessory designed for use with HP printers such as the P1606 and P1566 models. This black toner cartridge utilizes laser print technology to ensure crisp and professional-quality prints. As an authentic HP product, users can trust that this toner cartridge will deliver consistent and reliable results. Perfect for those looking to maintain the performance of their HP printer, this toner cartridge is a reliable choice for all printing needs. It is compatible with other printers also. This is a brand new sealed box.