Yield based on 5% coverage of an A4 page. For use in the following models: HP Color LaserJet P3015 (Page Yield=12,500), HP LaserJet Pro MFP M521 (Page Yield=12,500), HP LaserJet Enterprise 500 MFP M525 dn/f Series, HP LaserJet Enterprise Flow MFP M525c (Page Yield=13,500). Manufacturer Code: CE255X / CE255XC