These printers use the C4913A cartridge:
Click On a Printer to View it's Cartridges
HP DesignJet 500
HP DesignJet 500-24 IN
HP DesignJet 500-24-Inch
HP DesignJet 500-42 IN
HP DesignJet 500-42-Inch
HP DesignJet 500 PS
HP DesignJet 500 PS 24 IN
HP DesignJet 500 PS 24-Inch
HP DesignJet 500 PS 42 IN
HP DesignJet 500 PS 42-Inch
HP DesignJet 510
HP DesignJet 510-24 IN. Wide Format
HP DesignJet 510-42 IN. Wide Format
HP DesignJet 800
HP DesignJet 800-24-Inch
HP DesignJet 800-42-Inch
HP DesignJet 800 PS
HP DesignJet 800 PS 24-Inch
HP DesignJet 800 PS 42-Inch
HP DesignJet 815 MFP
HP DesignJet 820 MFP Wide Format
HP DesignJet 820 MFP
HP DesignJet 820 PS