HP 81A vs 81X: same black LaserJet toner for the same printers. The difference is page yield (and cost per page).
81A (CF281A) is the standard-yield black — about 10,500 pages. Buy this when you print lightly.
81X (CF281X) is the high-yield black — about 25,000 pages. Same fit. Fewer swaps. Better cost per page if the printer runs often.
| Feature | 81A | 81X |
|---|---|---|
| Black yield | ~10,500 (CF281A) | ~25,000 (CF281X) |
| Best for | Light / occasional | Regular office use |
| Printers | LaserJet Enterprise M604dn/n; M605dh/dn/n/x; M606dn/x; MFP M630f/h; Flow MFP M630h/z | |
Mono black only — there is no 81 color pack. Not 87A/87X or 94A/94X. Read the label on the cartridge already in the printer.
We sell a compatible 81A black (CF281A) and a compatible 81X high-yield black (CF281X), chips installed.
When to buy which: replace toner more than a couple of times a year → start with 81X (about 2.4× the pages for a modest step up in cartridge price). Occasional printing → 81A is enough. If the label says 81X, stay on X unless you intentionally want fewer pages per cartridge.
FAQ
Are 81A and 81X for the same printers?
Yes. Same M604 / M605 / M606 / M630 family. Only the yield changes.
Is there an 81 4-pack?
No. These are single black cartridges only.
Does compatible toner void the printer warranty?
Using a non-HP cartridge does not by itself void HP’s limited printer warranty. Damage HP attributes to a non-HP cartridge is a different question.
HP+ / Instant Ink?
Those programs do not accept compatible toner. If you are not sure the printer was never enrolled, ask before you order.
Ready to order: compatible HP 81A or compatible HP 81X.