hp 507a vs 507x — same HP Color LaserJet Enterprise M551 toner family, but they are not a simple A/X 4-pack swap. Check what you actually need: a full standard set, or a high-yield black only.
507A is the standard-yield color 4-pack (CE400A / CE401A / CE402A / CE403A) — cyan / magenta / yellow about 6,000 pages each, plus the standard-yield CE400A black in the same set. Buy this when you need all four colors at standard yield.
507X is the high-yield black single (CE400X) — about 11,000 pages. Same black fit for the M551 printers. Fewer black swaps. Better black cost per page if black runs out first. There is no 507X color 4-pack in this series.
| Feature | 507A (CE400A set) | 507X (CE400X) |
|---|---|---|
| What you get | Color 4-pack (Bk + C/M/Y) | Black single only |
| Black | Standard-yield CE400A (in the pack) | ~11,000 (CE400X) |
| Color yield (C/M/Y) | ~6,000 each | — |
| Best for | Full-set / light color use | Black-heavy printing on the same printers |
| Printers | Color LaserJet Enterprise M551n / M551dn / M551xh | |
Not 508A / 312A / 201A. Read the label on the cartridge already in the printer. 507A and 507X serve the same machines, but one is a full standard set and the other is HY black only.
We sell a compatible 507A color 4-pack and a compatible 507X high-yield black, chips installed.
When to buy which: need black + colors together at standard yield → 507A 4-pack. Black empties first and you already have colors → 507X black. Do not expect a 507X 4-pack — that SKU is not what we sell here.
FAQ
What is hp 507a vs 507x in one sentence?
Same M551 printers; 507A is the standard-yield color 4-pack, 507X is the high-yield black single (~11,000 pages).
Are 507A and 507X for the same printers?
Yes on the M551 family. The difference is pack shape and black yield, not printer fit.
Is there a 507X 4-pack?
No. 507X here is CE400X black only. For a full set at standard yield, use the 507A 4-pack.
Can I mix 507A colors with a 507X black?
Yes on fit — they serve the same machines. Mixing means each slot empties on its own schedule.
Does compatible toner void the printer warranty?
Using a third-party cartridge does not by itself void HP’s limited printer warranty. Damage HP attributes to a non-HP cartridge is a different question.
Ready to order: compatible HP 507A 4-pack or compatible HP 507X black.