Sources & method

How a status is decided

• On HP's Dynamic Security list means the model appears in HP's July 2021 "dynamic security enabled products list". That document is the only per-model list from HP we found.
• Firmware update can remove it / older units only come from HP support document c05308850, which names the series and, for some, the 1 December 2016 manufacture cut-off.
• Unverified is used for every other model. "Not on a 2021 list" is not evidence a printer is open.
• Cartridge numbers come from HP's June 2026 North America compatibility PDF, or from HP's series-level support page where the PDF lacks the exact model. They are not verified for other regions.
• The site build fails if any status has no linked source.

Known gaps and doubts

• HP's list is dated July 2021, is marked "HP Confidential", and is hosted by a reseller. We could not find a current public per-model list on hp.com.
• Models launched after mid-2021 cannot appear on it. HP's current FAQ says "HP standard" printers use dynamic security, so a missing model is not a clean bill of health.
• Firmware changes can alter behaviour at any time. HP's support document is general and not dated on the page; we have not tested any printer.
• Epson, Brother and Canon: only general statements, no per-model status. Cost per page is not shown, as we have no source with both page yield and price.
• Laser and large-format models appear only if they are on HP's list; laser models not on it are not covered in v1. HP's support document also names PageWide 300/400/500 printers for its firmware fix; they are not in HP's 2021 table and are not included yet.

What we do not publish

No firmware downgrades, chip resets, or instructions to defeat a printer's checks. We only list options the maker itself documents.

All sources used

• HP Printers – Dynamic Security Enabled Printers (HP policy statement, PDF) · HP Development Company, L.P., © 2020 (undated PDF), primary source. HP's own policy text, hosted on HP's support community site. It contains no model list.
• HP "Dynamic security guidance for channel partners", July 2021, section "Dynamic security enabled products list" (pp. 6–9) · HP Inc., July 2021, primary source. HP's document for resellers. It is marked "HP Confidential" and we could only find it on a reseller's website (jarcomputers.com), not on hp.com. It is the most complete per-model list of Dynamic Security printers we could find from HP. It is dated July 2021, so newer models are not in it.
• HP Inkjet printers – Dynamic Security feature affecting cartridges using non-HP security chip · HP Support, undated page, primary source. HP support document listing models for which a firmware update disables Dynamic Security.
• Original HP Ink and Toner supplies compatibility – For North America (4AA8-4471ENUC, June 2026, Rev. 2) · HP Inc., June 2026, primary source. HP's supplies compatibility table for North America. It lists cartridge numbers by model; it gives no page yields or prices.
• Which cartridges work with my HP printer? (series-level cartridge numbers, North America column) · HP Support, undated page, primary source. Series-level cartridge numbers; used only where the PDF above has no row for the exact model.
• Frequently Asked Questions (FAQs) about HP+ Printers · HP Inc., undated page, primary source. HP's current statement on HP+ (original HP ink for the life of the printer) and on "HP standard" printers using dynamic security.
• HP+ printer setup (HP app) · HP Support, undated page, primary source. States the HP+ requirement and that supported models can be identified by a small letter e at the end of the product number.
• Epson: third-party ink cartridges and your Epson printer · Epson America, undated page, primary source. Epson's own statement on third-party ink.
• Brother FAQ: Can I use non-Brother or third party supplies with the Brother machine? · Brother, undated page, primary source. Brother's statement for laser printers. It is about quality and warranty, not about blocking.
• Brother FAQ: Can third party ink be used to refill the ink cartridges? · Brother USA, undated page, primary source. Brother's statement for inkjet machines. It is about performance and warranty, not about blocking.

All links checked 2026-10-28. Some hp.com pages cannot be opened by automated link checkers and were opened by hand.