Cartridge delivers excellent print quality, sharp images and text - up to a 2,600 page yield. - Part number on carton and label is P7RMX - Compatible with Dell E310dw/ E514dw/ E515dw Printers - Offers up to 2,600 page yield based on 5% page coverageCompatible Printers: Dell E 510 Series, Dell E 514 dw, Dell E 310 dw, Dell E 515 dw, Dell E 515 dn