Compatible HP 78 Colour C6578AE. For the following machines: Designjet 500, Designjet 500PS, Designjet 510, Designjet 800, Designjet 800PS, Designjet 815MFP, Designjet 820 MFP, Designjet copier CC800PS, Designjet T1100, Designjet T1100ps. With a Yield of 6000