LD Compatible Toner Cartridge Replacement for HP 55X CE255X High Yield (Black, 4-Pack) Page Yield: 12,500* per cartridge | Shelf Life: 24-36 Months per cartridge | *Average printer cartridge page yield in accordance with ISO 19752 We offer lightning fast shipping on all printing supply and inkjet photo paper orders These replacement HP CE255X laser toner cartridges include a new electronic smart chip to track toner usage All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee For use in the following printers: Laserjet P3010, P3015, P3015d, P3015dn, P3015n, P3015x, Enterprise 500 MFP525dn, 525f, 525c, M521dn & M521dw