Product Name: Smart Gadget Compatible HP 64X Toner Cartridge Package Contents: 1 x CC364X Black Toner Cartridge High Page Yield: Up to 24000 pages per CC364X Black cartridge (5% coverage) Compatible for: HP LaserJet P4015n P4015tn P4015dn P4015x P4515n P4515tn P4515x Printer ADVICE: If you are not sure which toner, ink or drum unit cartridge the printer requires, please check the label of your old unit cartridge. It will help you see the correct required cartridge model. WARRANTY: 30 days for a refund or replacement from the date of purchase ? If you have any questions or concerns please do not hesitate and send us an email. A customer service representative will gladly assist you. ? The use of compatible or replacement cartridge supplies does not void your printer’s warranty.