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Replacement HP 3940 Ink Cartridges from $11.99

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  • MOST POPULAR
    HP 21 22 Ink Cartridges 2-Pack: 1 HP 21 Black and 1 HP 22 Color
    Retail Price: $51.99
    $27.88
    Save $24.11 (46% off retail price)
  • HP Ink 21 and 22 Cartridges 3-Pack: 2 Black and 1 Color
    Retail Price: $74.98
    $38.88
    Save $36.10 (48% off retail price)
  • HP 21 22 Ink Cartridge Combo Pack of 5: 3 Black and 2 Tri-color
    Retail Price: $126.97
    $64.75
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    Save $62.22 (49% off retail price)
  • HP 21 Ink Cartridge Black, Single Pack
    Retail Price: $24.99
    $11.99
    Save $13.00 (52% off retail price)
  • HP 22 Ink Cartridge Color, Single Pack
    Retail Price: $32.99
    $16.90
    Save $16.09 (49% off retail price)

How to Install HP 3940 Ink Cartridges?

  1. Make sure that the printer is turned on and load a stack of plain white paper in the paper tray.
  2. Open the printer's top cover. The ink cartridge's carriage will automatically move, so make sure to wait for it to completely stop moving before you proceed.
  3. Lightly push down the ink cartridge that needs to be replaced to release it. Then pull it out from the printer.
  4. Get your new CompAndSave HP DeskJet 3940 ink cartridge. Open it over a sink or garbage can to avoid any messes in case it leaks as sometimes, factories tend to overfill ink cartridges. Make sure to touch the black plastic part only, then remove the covering tape that is usually bright in color as well as the plastic protective case, if there is, before installing it.
  5. Insert the new HP DeskJet 3940 cartridge to its respective slot at a slight upward angle. Gently push it in until it snaps lock into place.
  6. Close the printer's top cover and do an alignment test page.

HP 3940 Ink Cartridges FAQ

Can you use other ink cartridges in a HP printer?
Yes, you can. Just make sure that the ink cartridge that you are going to use is the right model for your printer. CompAndSave offers replacement, remanufactured, or compatible ink cartridges that are designed to match the OEM specifications. This means that you can get the same quality and number of prints without paying as much compared to original ink cartridges. For more information, click ink knowledge base and you will be redirected to the right page.
How do I know what HP ink cartridge I need?
To know the model number of the cartridge your HP printer is using, you may check the user's manual that came with your printer. You may also check the existing cartridge that is installed in your printer. In front or on the side is a label or sticker with the model number, which is usually consisted of alphanumeric characters. For example, HP DeskJet 3940 printer uses the ink cartridge that has the model code of HP 21 for the black and HP 22 for the tri-color.

Replacement HP 3940 Ink Cartridges Reviews

94 Customer Reviews
4.9 out of 5 stars
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  • CompAndSave is the greatest!!
    Review for Replacement HP 21 Ink Cartridge - C9351AN - Black
    Mar 17, 2024
    Verified Buyer
    Always satisfied with the service and products I received from CompAndSave. Have never found refill cartridges cheaper or better than ones I order from this company. I highly recommend them for everyone.
    Was this review helpful?
  • its does the job
    Review for Replacement HP 21 Ink Cartridge - C9351AN - Black
    Jan 11, 2024
    Verified Buyer
    IF I did not like your service and the way you do sales and delivery I would not have used you two times. One thing I do not need is more than one add to use your service a month. Do not flood me with adds I only use so much ink and your asking for my order just waste my time and makes me think about unsubcribing?? from your mail
    Was this review helpful?
  • Review for Replacement HP 21 22 Combo Pack 2 Ink Cartridges: 1 Black and 1 Color
    Dec 20, 2023
    Verified Buyer
    worked great!
    Was this review helpful?
  • No problem with the ink cartridge.
    Review for Replacement HP 21 Ink Cartridge - C9351AN - Black
    Nov 15, 2023
    Verified Buyer
    The HP 21 ink cartridge works great.
    Was this review helpful?
  • Great price & quality!
    Review for Replacement HP 22 Ink Cartridge - C9352AN - Color
    Aug 6, 2023
    Verified Buyer
    Works just like the HP original 22.
    Was this review helpful?
  • It's great!
    Review for Replacement HP 22 Ink Cartridge - C9352AN - Color
    Apr 16, 2023
    Verified Buyer
    It always comes timely and it gives precise color ink.
    Was this review helpful?
  • Review for Replacement HP 21 22 Combo Pack 2 Ink Cartridges: 1 Black and 1 Color
    Mar 5, 2023
    Verified Buyer
    Great product. Worth the money
    Was this review helpful?
  • Impressive CompAndSave - Very impressive.
    Review for Replacement HP 21 22 Combo Pack 2 Ink Cartridges: 1 Black and 1 Color
    Feb 25, 2023
    Verified Buyer
    Ordering was easy, pricing was reasonable and delivery was timely. Thank you CompAndSave.
    Was this review helpful?
  • Much thanks
    Review for Replacement HP Ink 21 and 22 Cartridges 3-Pack - 2 x 21 Black, 1 x 22 Color
    Feb 20, 2023
    Verified Buyer
    Thank you
    Was this review helpful?
  • Review for Replacement HP 21 22 Ink Cartridge Combo Pack of 5 - 3 x 21 Black, 2 x 22 Color
    Feb 18, 2023
    Verified Buyer
    a good deal for me
    Was this review helpful?