Toner Cartridges for OEM Printers from Xerox deliver brilliant image quality and excellent reliability at a low cost. Compared to the original OEM toner cartridge, you will get better or equal page yield, pay around 25% less, and receive a 100% lifetime warranty. This black laser toner cartridge is compatible with HP LaserJet Enterprise M501, M506, M527 printers and has a yield of 18,000 pages.