Black Inkjet Cartridge Business Ink Equivalent to HP 973X This product works with firmware versions 2313A Remanufactured 10,000 Yield Packaged for use in Hewlett Packard For use in PAGEWIDE MNGD P55250DW , PAGEWIDE MNGD P57750DW , PAGEWIDE PRO 452 DN , PAGEWIDE PRO 452 DW , PAGEWIDE PRO 452 DWT , PAGEWIDE PRO 477 DN , PAGEWIDE PRO 477 DW , PAGEWIDE PRO 477 DWT , PAGEWIDE PRO 552 DW , PAGEWIDE PRO 577 DW