Our take
HP's data sheet maps product number 7ZU78A to the Color LaserJet Enterprise M555dn, a color print-only printer rated up to 38 pages per minute. It documents automatic two-sided printing and a recommended monthly range of 2,000–10,000 pages. The exact M555dn is distinct from the M555x and M554dn; those suffixes should not be used to fill gaps in its profile. The reviewed M555dn sources do not establish built-in wireless, so that attribute remains unknown. This is a workgroup-sized model, not an automatic fit for every home color desk, and the historical Amazon clue does not prove a current exact listing.
A wired color queue that needs automatic two-sided output and has a recurring volume within HP's documented recommendation..
Choose another printer if copying or scanning is required, the expected color volume is very light, or built-in Wi-Fi is a must-have that must be confirmed now.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- HP documents up to 38 ppm color output for the exact M555dn.
- Automatic two-sided printing is included in HP's configuration specification.
- The 2,000–10,000-page recommendation helps size a recurring shared queue.
What to weigh up
- This is a print-only device without copy, scan, or fax functions.
- The reviewed exact-model sources do not resolve wireless networking.
- The workload range starts above occasional use, so a small desk may be better served by a lighter-duty printer.
The key details
| Model covered | Color LaserJet Enterprise M555dn (7ZU78A) |
|---|---|
| Main functions | Print only |
| Print output | Color laser; up to 38 ppm |
| Two-sided printing | Automatic duplex; recommended 2,000–10,000 pages monthly |
Performance figures are manufacturer claims. Source checked October 10, 2026. Regional models and included accessories can differ.
What the features mean for you
Confirm the exact M555dn product number
HP's data sheet connects 7ZU78A to the Color LaserJet Enterprise M555dn. It distinguishes this model from the M555x and M554dn, whose features or standard equipment may differ. That exact mapping matters when comparing photographs or broad family listings; do not assume that an M555 label proves the dn suffix or its included hardware. The M555dn is color and print-only in the reviewed product record. If a workflow needs copy or scan, begin with an MFP instead of paying for a fast printer that cannot handle originals.
Automatic duplex supports recurring two-sided jobs
The exact HP sheet lists automatic duplex printing. The printer can turn sheets during a two-sided job, which reduces manual handling for recurring internal reports, forms, and longer drafts. That convenience is separate from scanning or copying two-sided originals; the M555dn remains a single-function printer. A published duplex specification also cannot confirm that the mechanism on an individual used unit is aligned or operating cleanly. Ask for a duplex sample from the actual device and inspect for skew or feed errors before relying on it for regular work.
Use the recommended range to judge office fit
HP recommends 2,000 to 10,000 pages per month for the M555dn. That range gives a concrete scale for a shared color queue and helps distinguish it from occasional personal output. It is not a guarantee that a specific used machine is healthy, nor is the upper end a promise of cost or reliability. The 38 ppm figure is a manufacturer-rated speed, not a measured result for mixed color jobs. Compare normal monthly work with the recommended band, then check the page counter, toner state, and service history of the offered unit.
Keep the networking claim at the exact-model level
The M555dn data sheet and reviewed support material establish the model and its print features, but they do not confirm built-in wireless for this exact configuration. Wireless therefore remains unknown instead of being copied from an M555x or another Enterprise sibling. Before choosing a placement that depends on Wi-Fi, obtain the exact interface table or a photo of the installed wireless accessory and verify compatibility with the office network. Do not infer wireless from a seller's generic M555 family title. Use only connections confirmed for the unit you are considering.
A fast printer still needs a clear paper routine
The reviewed sources establish the M555dn's color output, rated speed, duplex, and monthly recommendation; they do not settle every detail of a specific seller's paper options or maintenance state. Treat optional equipment and tray counts as questions to verify on the actual device rather than assumed standard features. For a shared queue, confirm the exact product number, inspect feed paths, and print a sample in color and duplex. For a light home routine, compare whether a smaller model's lower workload and simpler footprint would fit better than this enterprise printer's capacity.
What else to compare
Compare the M555x only after checking its separate configuration, or choose a color MFP when original documents need copying and scanning.
Before you buy
Does the M555dn print on both sides automatically?
Yes. HP's exact M555dn data sheet lists automatic duplex printing for this configuration.
What monthly volume does HP recommend?
HP gives the M555dn a 2,000–10,000-page recommended monthly range; it is guidance, not a guarantee for a used unit.
Does the reviewed source confirm built-in Wi-Fi?
No. Wireless is left unknown for the exact M555dn rather than inferred from the M555x or another family member.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- HP Color LaserJet Enterprise M555dn data sheet ↗ — checked October 10, 2026.
- HP M555dn data sheet: 7ZU78A mapping, color print-only function, speed, duplex and recommended workload ↗ — checked October 10, 2026.
- HP M554/M555 specifications: exact-model family distinctions and configuration details ↗ — checked October 10, 2026.
The decision
The M555dn is a color print-only choice for a recurring workgroup queue that can use automatic duplex and HP's stated monthly range. Wireless remains unconfirmed.
Is it the right fit?
Check the exact model and today’s offers on Amazon.