Dataproducts 57065 Replacement toner for hp printers laserjet 4l, 4ml, 4p, 4mp, black Assembled in Mexico 100% satisfaction guarantee; expert technical support 1-year warranty; 100% performance guarantee; expert technical support: The use of this Dataproducts print cartridges does not void your printer's warranty Compatible Hardware: HP LaserJet 4L, 4ML, 4P, 4MP Page Yield: 3,350 Toner Cartridge For HP printer models LaserJet 4L, 4ML, 4P, 4MP. Remanufactured Black Cartridge