QINK 1Pack(Black) CE278A Premium Compatible Toner Cartridge For HP CE278A 78A LaserJet P1606dn, LaserJet M1536dnf Contents: 1*Black CE278A 78A Type: Premium Compatible Page Yield: Up to 2,100 Pages at 5% Coverage Compatible Printer List: LaserJet P1606dn ; LaserJet M1536dnf 100% Satisfaction Guaranteed. We stand behind every product we sell and offer a 100% satisfaction guarantee for a full refund (excluding shipping costs) of the purchase price within 30 days. Defective cartridge can be exchanged within 90 days.