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How to Stop HP Firmware Updates From Blocking Your Ink
How to Stop HP Firmware Updates From Blocking Your Ink
June 20, 2026 —
If you've bought an HP printer in the last few years, you may have run into this: you install a compatible ink cartridge, and suddenly your printer won't print. It shows an error like "cartridge pr...
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What Ink Does the HP ENVY 6500e Use?
What Ink Does the HP ENVY 6500e Use?
October 1, 2026 —
Quick answer: The HP ENVY 6500e series uses HP 68 ink — one black and one tri-color cartridge — with HP 68e EvoMore as the higher-capacity black. It does not use HP 67, even though older ENVY model...
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What Ink Does the HP OfficeJet 5255 Use?
What Ink Does the HP OfficeJet 5255 Use?
May 21, 2026 —
Quick answer: The HP OfficeJet 5255 uses HP 63 Black and HP 63 Tri-color ink cartridges (in the U.S. and Canada). For a much lower cost per page, choose the HP 63XL high-yield versions, which print...
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HP Envy 6055e Review (2026): Honest Pros, Cons & Who It's Really For
HP Envy 6055e Review (2026): Honest Pros, Cons & Who It's Really For
August 23, 2026 —
Heads up: this post contains Amazon affiliate links. If you buy through them, Castle Ink may earn a small commission at no extra cost to you. Castle Ink also sells compatible ink cartridges, includ...
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What Ink Does the HP Photosmart C4280 Use?
What Ink Does the HP Photosmart C4280 Use?
May 21, 2026 —
Last updated: September 27, 2026. Reviewed by William Elward, founder of Castle Ink.
Correction: an earlier version of this article said our cartridges carry a two-year warranty. Castle Ink supplie...
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What Ink Does the HP OfficeJet Pro 6960 Use?
What Ink Does the HP OfficeJet Pro 6960 Use?
August 23, 2026 —
Quick answer: The HP OfficeJet Pro 6960 uses HP 902 (standard) or HP 902XL (high-yield) ink in four separate cartridges — black, cyan, magenta and yellow. Castle Ink stocks compatible 902XL multipa...
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What Ink Does the HP Envy 4500 Use?
What Ink Does the HP Envy 4500 Use?
April 20, 2026 —
Quick answer: The HP Envy 4500 uses two cartridges: HP 61 Black and HP 61 Tri-color, with HP 61XL as the high-yield option. A single tri-color cartridge holds cyan, magenta and yellow together, so ...
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What Ink Does the HP Photosmart 7510 Use?
What Ink Does the HP Photosmart 7510 Use?
September 6, 2026 —
Quick answer: the HP Photosmart 7510 uses HP 564 ink — and it is a five-cartridge printer. Black, photo black, cyan, magenta and yellow. The high-yield versions are HP 564XL.
That fifth cartridge ...
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What Ink Does the HP OfficeJet Pro 6975 Use?
What Ink Does the HP OfficeJet Pro 6975 Use?
August 23, 2026 —
Quick answer: The HP OfficeJet Pro 6975 uses HP 902 (standard) or HP 902XL (high-yield) ink in four separate cartridges — black, cyan, magenta and yellow. Castle Ink stocks compatible 902XL multipa...
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What Ink Does the HP Envy 6555e Use?
What Ink Does the HP Envy 6555e Use?
August 24, 2026 —
Correction (October 2026): an earlier version of this guide said the ENVY 6555e uses HP 67. It uses HP 68 / 68e.
Quick answer: The HP ENVY 6555e uses HP 68 ink — one black and one tri-color cartrid...
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May 21, 2026 — Last updated: September 27, 2026. Reviewed by William Elward, founder of Castle Ink. Correction: an earlier version of this article said our cartridges carry a two-year warranty. Castle Ink supplie...
April 20, 2026 — Quick answer: The HP Envy 4500 uses two cartridges: HP 61 Black and HP 61 Tri-color, with HP 61XL as the high-yield option. A single tri-color cartridge holds cyan, magenta and yellow together, so ...
