If a warning is displayed, all are displayed even if you do not print in color. HP makes it so that you have to buy a lot of ink.
4-Pack Toner Bank Compatible Replacement for Brother TN760 TN-760 TN730 TN-730 Black Toner Cartridge for MFC-L2710DW DCP-L2550DW HL-L2350DW HL-L2390DW MFC-L2750DW HL-L2395DW HL-L2370DW Printer Ink
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HP 902XL Magenta Ink Cartridge for π¨οΈ HP OfficeJet 6900 & Pro 6900 Series, T6M06AN
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Inkjet MFP HP Ink Tank Wireless 419, color, A4, black
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