Everything you need to keep your DeskJet 840 printing. Below are the 1 compatible cartridge we currently stock — genuine & compatible options, shipped fast from Calgary, Canada, with a 30-day return guarantee.
The DeskJet 840 is compatible with 1 cartridge we carry, including HP 15 Black Ink Cartridge | Works with HP DeskJet 810, 825, 840, 920, 940, 3820;. All are listed above with live pricing and stock.
We stock both genuine OEM and quality compatible cartridges. Each product page states which it is, so you can choose the price and warranty that suits you.
In-stock cartridges ship from our Calgary warehouse — typically same or next business day, right across Canada. Local pickup is also available.
Every cartridge on this page is cross-referenced to the DeskJet 840. If anything doesn't fit, our 30-day return guarantee has you covered.
