This HP Toner Cartridge 90X is a black, ultra-high yield original toner cartridge designed for HP LaserJet printers. It offers a page yield of approximately 2 x 24,000 pages. This pack contains two toner cartridges, providing a cost-effective solution compared to individual cartridges. It is compatible with various HP LaserJet Enterprise models including M602dn, M602n, M602x, M603dn, M603n, M603xh, M602m, M4555 MFP, M4555f MFP, M4555fskm MFP, and M4555h MFP. Print professional-quality documents and simplify your ordering process with this convenient dual pack.