LINKYO Compatible Toner Cartridge Replacement for HP 78A CE278A (Black, 2-Pack) This is a LINKYO Alternative Replacement for OEM Product Includes 2x Black Toner Cartridges Estimated print yield of 2,100 pages* per cartridge *Based on ISO 19752 Suitable for use in HP LaserJet Pro M1536dnf, P1606, P1606dn 2 Years 100% Quality Guarantee ensures that you will get quality printouts with our compatible or remanufactured cartridges HP LaserJet Pro M1536dnf HP LaserJet Pro P1566 HP LaserJet Pro P1606dn <span class="a-text-bold">Shake</span> cartridge gently from (back &amp; forth) several time <span class="a-text-bold">Remove</span> the orange clip on each side of the cartridge <span class="a-text-bold">Pull</span> out entire sealing tape <span class="a-text-bold">Insert</span> toner cartridge into the printer