Dataproducts DPC27P Remanufactured C4127X (27X) Toner, 10000 Page-Yield, Black Assembled in Mexico 100% satisfaction guarantee; expert technical support 1-year warranty Compatible Hardware: HP LaserJet 4000, 4000N, 4000SE, 4000T, 4000TN, 4050, 4050N, 4050SE, 4050T, 4050TN Page Yield: 10000 Toner Cartridge For HP printer models LaserJet 4000, 4050 Series. Remanufactured High-Yield Black Cartridge