These printers use the CE042A cartridge:

HP DesignJet Z-6200-42 IN.

HP DesignJet Z-6200-60 IN.

HP DesignJet Z-6200-42-IN

HP DesignJet Z-6200-60-IN

HP DesignJet Z-6600

HP DesignJet Z-6600-60 IN.

HP DesignJet Z-6610-60 IN.

HP DesignJet Z-6800

HP DesignJet Z-6800-60 IN

HP DesignJet Z-6810-42 IN.

HP DesignJet Z-6810-60 IN.