HP's 2026 entry-level mono range ships under five different cartridge codes that all print black, all sit in the 1,000-page class, and all look nearly identical on a shelf. They are not interchangeable. W1790A, W1800A, W1850A, W1850X and the earlier W1840A/W1840X split across three regional market codes and four machine families. This guide maps every code to the machine it actually fits, so your next purchase order does not turn into a return.
The five codes at a glance
Everything below is taken from our published catalog for the 2026 entry platform:
| Cartridge | OEM code | Region | Yield | Fits |
|---|---|---|---|---|
| W1790A | HP 179A | CA | 1,000 pages | LaserJet M214 · MFP M239 |
| W1800A | HP 180A | MEA | 1,000 pages | LaserJet M216 · MFP M241 |
| W1850A | HP 185A | EUR | 1,050 pages | LaserJet M223 · MFP M248 |
| W1850X | HP 185X | EUR | 2,300 pages | LaserJet M223 · MFP M248 |
| W1840A / W1840X | HP 184A / 184X | Earlier launch | 1,050 / 2,300 pages | LaserJet M220 · MFP M246 |
Why the region code matters more than the model name
This is the part that trips up buyers who source from a photo or a marketplace listing. The same printer name sold into different regions can be configured for a different supply code, and the region suffix on the cartridge is HP's way of controlling which supply reaches which market. A W1790A is not a "cheaper W1800A" and it is not a substitute — it is the supply for a different machine family and a different market assignment.
In practice, three rules keep orders clean:
- Quote from the dead cartridge, not the printer badge. The code printed on the unit being replaced is the only reliable identifier once a fleet is mixed.
- Ask for the destination market. Two customers with "M220-series" machines in different regions may need different codes, and the model number alone will not tell you which.
- Never substitute across codes on your own initiative. A cartridge that physically seats can still be rejected, mis-report or fail to register a toner level, and that becomes your return, not the factory's.
Standard or high yield: the arithmetic
The high-yield decision is pure replacement count. Take a machine that prints 20,000 pages between service visits:
| Option | Rated yield | Cartridges per 20,000 pages |
|---|---|---|
| W1850A (standard) | 1,050 pages | ≈ 19.0 |
| W1850X (high yield) | 2,300 pages | ≈ 8.7 |
That is roughly ten fewer cartridge changes per machine per 20,000 pages. For a reseller servicing accounts, the value is not only the unit price — it is ten fewer site visits, ten fewer support calls and a lower chance of a mid-cycle stock-out. For a very low-volume home user, the standard W1850A can still be the better fit, because a high-yield cartridge that sits in a machine for years is capital tied up on a shelf.
The same logic applies one tier down: W1790A and W1800A are both rated 1,000 pages with no high-yield variant listed in our catalog, so buyers on those machines have a single yield option and should plan order frequency around it rather than assume an X version exists.
Chip behaviour, stated plainly
Chip questions cause more pre-sales friction than price. Our position on this range is specific:
- Patented new-built — ships with a smart counting chip recognised on installation. No chip swapping, no external resetter.
- Remanufactured — chip configuration is confirmed per market and per order before production, because what works on one regional firmware build does not always carry to another.
If a quotation does not state which build and which chip configuration you are buying, ask before you commit to volume. "Compatible with M223" is not a specification.
Remanufactured or patented new-built: how to choose
Both builds are in our catalog for W1790A, W1800A, W1850A and W1850X, and the choice is a commercial one rather than a technical one:
- Remanufactured — lower landed cost, and the right call for price-sensitive accounts with predictable, moderate volume where the buyer accepts a reused core.
- Patented new-built — the right call when the buyer needs a clean patent position, consistent cosmetic condition across a batch, or a supply story they can defend to a corporate procurement team. This is also the build that carries the chip as standard on this range.
For tender-driven or corporate accounts, we generally recommend quoting the new-built first and the remanufactured as a cost-down alternative. Leading with remanufactured on a tender invites a specification challenge you do not need.
Stocking advice for distributors
If you carry this platform, stock by region and by machine family, not by "HP 2026 mono". A workable opening position for a distributor serving mixed accounts:
- W1790A and W1800A — one carton each. They cover four machine models between them and are the entry point for CA and MEA accounts.
- W1850A and W1850X — the EUR pair, and the only two-yield choice in the range. W1850X is the volume SKU; W1850A is the sample and low-volume SKU.
- W1840A / W1840X — keep them separate from the newer codes even though the yields match. The machines are different and the codes are not interchangeable.
Mixed-model and mixed-region orders are quoted within one business day, and sample units are free with the buyer paying courier. Send the model list and destination market, and we will map it to codes before quoting — that step alone removes most of the mis-order risk in this range.
Frequently asked questions
Are HP W1790A and W1800A cartridges interchangeable?
No. Although both are 1,000-page black cartridges from the same 2026 entry platform, W1790A fits the LaserJet M214 and MFP M239, while W1800A fits the LaserJet M216 and MFP M241. They are also assigned to different regional market codes, so ordering by printer model alone is not enough.
Is the HP W1850X high-yield cartridge worth it over W1850A?
On yield alone, yes for any machine printing more than a few hundred pages a month. W1850X is rated 2,300 pages against 1,050 for W1850A, so covering 20,000 pages takes about 8.7 high-yield cartridges versus about 19 standard ones — roughly ten fewer replacements and ten fewer intervention points per machine.
Do these compatible cartridges include chips?
The patented new-built versions ship with a smart counting chip that is recognised on installation, with no chip swapping or external resetter. For remanufactured units, the chip configuration is confirmed per market and per order before production.
Can a distributor mix all three region codes in one shipment?
Yes. Mixed-model and mixed-region orders are quoted within one business day. Keep the SKUs segregated by region on the packing list and outer carton, because the codes are not interchangeable at the machine and a mis-picked carton becomes a return.
Related reading
- W1790A / W1800A series page — full SKU table with builds and printer fit
- W1850A / W1850X series page — standard vs high yield, chip details
- W1840A / W1840X series page — the September 2026 launch on the same platform
- Printer Finder — look up a machine and get every cartridge code that fits it