HP W2121A (#212A) Genuine Cyan Toner Cartridge - 4,500 PagesHP #212A Genuine Cyan Toner Cartridge This HP # 212a Toner Cartridge will help to keep your printer producing sharp, crisp, professional documents. It's specially designed to work with HP printers and is easy to install so you can do it yourself. This cartridge can also be known by its model number W2121A It has an estimated page yield of 4,500 This cartridge is compatible for use with your HP LaserJet M 554, M 555 and M 578 machine. The pack includes