GREENSKY Compatible Toner Cartridge Replacement for HP CE278A ( Black , 4-pack ) Style:NewCompatible/Replacement Package Contents: 4 pack CE278A 78A Laser Toner Cartridge PageYield: 2100 Pages per black toner cartridge at 5% coverage (Letter/A4) Guarantee: Weoffera1year100%nohassleguaranteeandFREEreturnonany defect. Suitable for:LaserJet Pro P1606dn/ Pro M1536dnf/ Pro P1560/Pro P1566/Pro P1600/Pro P1606; Canon IC MF4410/4450/4412/4420/4550/4570/D520