Hp 940 black inkjet print cartridge c4902ae working together with the print heads in your officejet printer the hp no 940 black inkjet cartridge produces a fine jet to produce exceptional detail on the paper manufactured with hp quality inks and strenuously tested this cartridge ensures flawless results every time key features genuine hp product for flawless operation works best with hp paper supplies works in conjunction with hp print heads for flawless results compati