LD &copy; Remanufactured Replacement Laser Toner Cartridges for Hewlett Packard CE255A (HP 55A) Black (3 Pack) for use in the LaserJet P3015n, Enterprise 500 MFP M525f, P3015, Enterprise flow MFP M525c, P3015dn, Pro MFP M521dw, P3015x, Enterprise 500 MFP M525dn, Pro M521dn Multifunction Printer, P3010 Series, P3015d Printers Page Yield Per Cartridge: 6,000* | Shelf Life: 24-36 Months | *Average printer cartridge page yield in accordance with ISO 19752 All LD branded products are backed by a LIFETIME 100% satisfaction guarantee The new chip allows the Hewlett Packard Printer and our compatible CE255A (55A) cartridge to interact and track toner usage. For use in the following HP LaserJet Printers: LaserJet P3015n, Enterprise 500 MFP M525f, P3015, Enterprise flow MFP M525c, P3015dn, Pro MFP M521dw, P3015x, Enterprise 500 MFP M525dn, Pro M521dn Multifunction Printer, P3010 Series, P3015d Printers