Replaces the Following Manufacturer Numbers: C4127X (HP 27X). Compatible with the Following Printer Models: LaserJet 4000 LaserJet 4000N LaserJet 4000SE LaserJet 4000T LaserJet 4000TN LaserJet 4050 LaserJet 4050 usb-mac LaserJet 4050N LaserJet 4050SE LaserJet 4050T LaserJet 4050TN.
