HP 55X High Yield Black Genuine Original LaserJet Toner Cartridge CE255X
MPN CE255X. Selectability / Model 55X (High Yield). HP LaserJet Enterprise P3015 series P3015 (all variants). HP LaserJet Pro MFP M521 series M521 (all variants). HP LaserJet Flow MFP M525 M525 Flow models.