HP warrants to you, the end-user customer, that HP hardware and accessories will be free from defects in materials
and workmanship after the date of purchase, for the period specified above. If HP receives notice of such defects
during the warranty period, HP will, at its option, either repair or replace products which prove to be defective.
Replacement products may be either new or equivalent in performance to new.
Using, storing, and monitoring the print cartridge can help ensure high-quality output. The average cartridge yield is 6,500 pages (for the Q7551A cartridge) or 13,000 pages (for the Q7551X cartridge), in accordance with ISO/IEC 19752. Actual cartridge yield depends on specific use.
The model number and serial numbers are listed on the identification labels located on the back of the device. The model number is alphanumeric, such as Q7812A for an HP LaserJet P3005 printer. The ENWW Walkaround 5serial number contains information about the country/region of origin, the device version, production code, and the production number of the device.