What Toner Does the HP LaserJet Enterprise M551dn Use?
Last Updated:The HP LaserJet Enterprise M551dn is a color laser printer that uses the HP 507A standard-yield toner cartridges or the HP 507X high-yield toner cartridges. The cartridges have integrated drums, so there is no separate drum unit to replace.
CastleScore · October 2026
81/100 — Highly Recommended
HP LaserJet Enterprise M551dn
| Pillar (weight) | Score | What it is based on |
|---|---|---|
| Owner ratings (28%) | 78 | 4.00★ average across 82 ratings at Amazon (4.0) |
| Expert reviews (20%) | — | No published numeric expert score we could verify. |
| Cost per page (18%) | 90 | About 2.6¢ per page blended (black + color) with our compatible 507X black (11,000 pages) and 507A colors (6,000 pages). |
| Reliability (18%) | 89 | Most-reported problems: several separate maintenance consumables besides toner that owners must track |
| Features (11%) | 57 | Auto two-sided printing, Ethernet, fast (20+ ppm). No document feeder, no fax, no touchscreen. |
| Value (5%) | 84 | Running cost and owner satisfaction |
Limited data: We could not find enough published expert scores for this printer, so that weight is spread across the other pillars.
Discontinued. HP no longer sells the M551dn new and directs owners to its supplies. HP 507A and 507X toner is still sold.
CastleScore is Castle Ink’s own editorial rating, built from retailer star ratings, expert reviews, real cost per page and owner complaint patterns, checked October 11, 2026. It is not a customer review. See every ranked printer or how the score works.
The toner, pictured
HP 507X BlackCE400X · ~11,000 pages
HP 507A CyanCE401A · ~6,000 pages
HP 507A MagentaCE403A · ~6,000 pages
HP 507A YellowCE402A · ~6,000 pages
HP 507X Black
HP 507A Cyan
HP 507A Magenta
HP 507A YellowOur own compatible toner, photographed in-house.
HP 507A & 507X Toner at a Glance
| Consumable | Part Number | Page Yield | Type |
|---|---|---|---|
| Black Toner | HP 507A (CE400A) | ~5,500 pages | Standard |
| Cyan Toner | HP 507A (CE401A) | ~6,000 pages | Standard |
| Magenta Toner | HP 507A (CE403A) | ~6,000 pages | Standard |
| Yellow Toner | HP 507A (CE402A) | ~6,000 pages | Standard |
| Black Toner | HP 507X (CE400X) | ~11,000 pages | High Yield |
HP 507A/507X also fits the HP LaserJet Enterprise 500 color M551n and M551xh, the Enterprise 500 color MFP M575dn and M575f, the Enterprise Flow MFP M575c and the LaserJet Pro 500 color MFP M570dn. Some resellers also list the M570dw. We sell compatible 507X black and 507A cyan, magenta and yellow.
How to Replace the Toner
- Open the front cover of the printer.
- Pull out the used HP 507A or 507X cartridge for the color you are replacing.
- Unbox the new cartridge, rock it gently 5–6 times to distribute toner, and remove the protective seal.
- Slide the new cartridge in until it clicks into place.
- Close the cover. The printer will recognize the new cartridge automatically.
Troubleshooting Tips
- "Replace Toner" or low-toner warning: HP cartridges report their level through a chip. If a new cartridge still shows a low or non-genuine warning, take it out, reseat it firmly and power-cycle the printer.
- Faded or color-shifted prints: Run the printer's built-in color calibration from the maintenance menu. Gently rock each cartridge side-to-side to redistribute toner if any single color is faint.
- Print quality declining over time: Because the drum is built into each cartridge, a new toner cartridge also brings a fresh drum. If problems continue, check the other service parts: the toner collection unit (CE254A, about 36,000 pages) and the fuser kit (CE484A on 110V U.S. printers).
- Paper jams or smudges: Inspect the paper path and pickup roller for wear. Replacing worn rollers and keeping the printer dust-free prevents repeated print-quality issues.
What LaserJet Enterprise M551dn owners ask
These are the questions that come up most for this printer on retailer Q&A pages, HP's support forum and owner reviews, answered in our words.
Is there a separate drum to replace?
No. The drum is built into each HP 507A and 507X cartridge. The separate long-life parts are the toner collection unit (CE254A, about 36,000 pages) and the fuser.
Is there a high-yield cartridge for every color?
Only for black. The 507X black (CE400X) is rated for about 11,000 pages. Cyan, magenta and yellow come only as 507A, at about 6,000 pages each.
Can it print over Wi-Fi?
Not on its own. It has Gigabit Ethernet and USB. Wireless needs an optional HP Jetdirect 2700w (J8026A) or 2800w (J8029A) accessory.
How much paper does it hold?
600 sheets as standard: a 100-sheet Tray 1 plus a 500-sheet Tray 2. One optional 500-sheet feeder takes it to 1,100.
Are the cartridges that come with it full size?
Yes. HP rates the four cartridges in the box at about 5,500 pages black and 6,000 pages per color, the same as standard 507A cartridges.
LaserJet Enterprise M551dn quirks worth knowing
- U.S. printers use the 110V fuser kit CE484A. CE506A is the 220V version for other markets, so check the voltage before you order a fuser.
- It has an 8 GB SSD, 1 GB of memory and two USB host ports for printing from a flash drive.
- HP rates it for up to 75,000 pages a month but recommends 1,500 to 5,000.
- The same 507A/507X cartridges also fit HP's Enterprise 500 color MFP M575 series and the LaserJet Pro 500 color MFP M570dn, so one stock of toner covers a mixed fleet.
More HP ink guides: HP LaserJet Pro M402n · HP LaserJet Pro MFP M426fdw · HP LaserJet Pro M201dw · find any printer
Replacing it? Our highest-rated alternatives
- Brother HL-L2460DW — CastleScore 90
- Brother MFC-L2820DW — CastleScore 90
- HP Color LaserJet Pro 3201dw — CastleScore 82
Sources
Ratings and prices were checked on October 11, 2026 and will change over time.
Need replacement HP toner cartridges? Shop HP toner cartridges at Castle Ink. Compatible, up to 70% less than OEM, and shipped the same day when you order by 4 PM ET.