HP 29X / C4129X High Yield Black Laser Toner Cartridge Compatible with HP LaserJet 5000, LaserJet 5000dn, LaserJet 5000gn, LaserJet 5000n, LaserJet 5100, LaserJet 5100dtn, LaserJet 5100tn Toner Ink &copy; Blake Printing Supply