The HP P2V77A Intro Gray ink cartridge is a gray ink supply listed for the HP DesignJet Z9+DR 44-inch PostScript Printer with V-Trimmer, model X9D24A. It is identified as an Intro Gray cartridge, distinct from the separately listed HP 746 and HP 747 cartridges.
This cartridge is intended for use in the named DesignJet printer. Its gray ink supports the printer’s color set, while the exact P2V77A part number identifies this particular cartridge listing. The source does not state the ink volume or package contents, so those details are not included here.