These printers use the P2V80A cartridge:
HP DesignJet Z-6 DR PS VTR 44 IN.
HP DesignJet Z-6 PS 24 IN.
HP DesignJet Z-6 PS 44 IN.
HP DesignJet Z-9 + PS
HP DesignJet Z-9 DR PS VTR 44 IN.
HP DesignJet Z-9 PS 24 IN.
HP DesignJet Z-9 PS 44 IN.
HP DesignJet HD PRO 2