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HP LaserJet Pro 400 color M451dw

 & M. David Stone Contributing Editor

Our team tests, rates, and reviews more than 1,500 products each year to help you make better buying decisions and get more from technology.

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HP LaserJet Pro 400 color M451dw - Laser Printers
4.0 Excellent

The Bottom Line

The HP LaserJet Pro 400 Color Printer M451dw delivers somewhat sluggish speed, but with high-quality output and suitable paper handling for a small office or workgroup.

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Pros & Cons

    • High-quality output across the board.
    • Paper handling suitable for a small to medium size office or workgroup.
    • Ethernet and Wi-Fi.
    • Relatively slow for the price.
    • Text is not quite on the same high level of quality as graphics and photos.

HP LaserJet Pro 400 color M451dw Specs

Business Applications - DEFAULT SETTINGS - Adobe Acrobat 8 - 4 pages, text and photos (landscape): 1:33 (min:sec)
Business Applications - DEFAULT SETTINGS - Effective PPM (pages per minute): 3.2
Business Applications - DEFAULT SETTINGS - Microsoft Excel 2003 - 1 page, graph: 0:19 (min:sec)
Business Applications - DEFAULT SETTINGS - Microsoft Excel 2003 - 1 page, table A (with grid): 0:19 (min:sec)
Business Applications - DEFAULT SETTINGS - Microsoft Excel 2003 - 3 pages, charts and graphs: 0:52 (min:sec)
Business Applications - DEFAULT SETTINGS - Microsoft PowerPoint 2003 - 4 full-page slides: 1:10 (min:sec)
Business Applications - DEFAULT SETTINGS - Microsoft Word 2003 - 2 pages, text: 0:24 (min:sec)
Business Applications - DEFAULT SETTINGS - Total output time : 4:37 (min:sec)
Color or Monochrome: 1-pass color
Connection Type: Ethernet
Connection Type: USB
Connection Type: Wireless
Cost Per Page (Color): 15.5 cents
Cost Per Page (Mono): 2.4 cents
Direct Printing from Cameras: No
Duty Cycle: 40000 pages per month
Input Capacity (printer input only): 300 sheets
LCD Preview Screen: No
Maximum Standard Paper Size: Legal
Network-Ready: Yes
Number of Cartridges: 4
Number of Ink Colors: 4
Photos - HIGH -QUALITY SETTINGS - Adobe Photoshop 7 - Average output time per print: 4" x 6" prints : 0:25 (min:sec)
Print Duplexing: Automatic
Printer Category: Laser
Rated Speed at Default Settings (Color): 21 ppm
Rated Speed at Default Settings (Mono): 21 ppm
Tech Support: and product exchange.
Tech Support: email support for 1 year
Tech Support: limited warranty
Tech Support: Phone
Tech Support: web
Technology (for laser category only): Laser
Type: Printer Only

Once you get past the unwieldy name, the HP LaserJet Pro 400 color Printer M451dw ($549 direct) has a lot to recommend it. It offers high-quality output, especially for graphics and photos, plus paper handling suitable for typical small to medium-size offices or for a micro office with heavy-duty print needs. The combination qualifies it not just as a workhorse color laser, but as one that should be of particular interest to anyone who needs high-quality output for anything from PowerPoint handouts to small runs of one-page mailers or similar marketing materials.

The M451dw is the mirror image in many ways of the similarly priced Brother HL-4570CDW ($500, 3.5 stars), offering less emphasis on speed and more on output quality. Like the Brother printer, it is small enough, at 12.7 by 15.9 by 19.1 inches (HWD), to fit easily in a small office. It's also heavy enough, at 52.1 pounds, so you may need some help moving it. Once in place, however, setup is standard fare, with support for both wired and WiFi network connections. For my tests, I connected the printer to a wired network and installed the drivers on a Windows Vista system.

Speed and Output Quality

Print speed is a little sluggish for the price. HP rates the M451dw at only 21 pages per minute (ppm) for both monochrome and color. That's a much lower rating than, for example, the HL-4570CDW , at 30 ppm for both, or the Editors' Choice in this category, the Xerox Phaser 6280DN ($649 direct, 4 stars), rated at 31 ppm for mono pages and 26 ppm for color. However, note that these ratings aren't really comparable. HP's rating is based on the relatively new ISO tests, rather than the speed of the engine itself, as with the other two printers.

HP LaserJet Pro 400 color Printer M451dw

Even with that in mind, the printer came in at a surprisingly slow speed on our tests. I timed the M451dw on our business applications suite (using QualityLogic's hardware and software for timing) at a lackadaisical 3.2 ppm. The HL-4570CDW was more than twice as fast, at 6.8 ppm. Even the 6280DN , which also focuses on output quality, was faster, at 4.2 ppm

The good news is that what the M451dw lacks in speed it largely makes up for in output quality. More precisely, text quality is good enough for most purposes, while graphics and photo quality is among the best available.

Text quality is at the low end of the range where the vast majority of color laser printers fall. However, laser text quality is so high in general that even the low end of the range is reasonably high quality. The M451dw text is good enough for anything short of the most demanding desktop publishing applications with small fonts.

Graphics output was in the top tier for laser printers, making it good enough for output going to important clients when it's important to look fully professional. Photos, similarly, were a match for the best color lasers, and just short of true photo quality. Mount the photos in a frame behind glass, and you'll have to take a close look to see that they're not traditional photos.

Other Issues

The M451dw's combination of text, graphics, and photo quality helps make it suitable for small runs of marketing materials as an alternative to using a copy shop. The quality is also easily good enough for client or company newsletters or the like, with full-color photos and graphics. The photo output in particular is good enough to be useful in, say, a real estate office to print photos of properties for potential buyers.

The printer's paper handling is also a strong point. The M451dw offers a 250-sheet drawer, a 50-sheet multipurpose tray, and a built-in duplexer (for two-sided printing), a combination that should be enough for most small offices. If you need more, you can add a second 250 sheet tray ($115.99 direct) for a total 550-sheet capacity.

If you're more concerned with print speed than print quality, you should be looking elsewhere, with the Brother HL-4570CDW a good candidate. If output quality is more important, also be sure to check out the Xerox 6280DN, which doesn't offer quite as high quality graphics and photos, but has absolutely top-quality text. If you can get by with slightly lower text quality, however, the HP LaserJet Pro 400 color Printer M451dw offers good paper handling and a balance of text, graphics, and photo quality that your inner Goldilocks may decide is just right.

More Laser Printer Reviews:

•   HP Color LaserJet Pro MFP M180nw
•   Canon imageClass MF424dw
•   Canon imageClass MF236n
•   Canon imageClass MF232w
•   Brother HL-L2370DW XL
•  more

 

Final Thoughts

HP LaserJet Pro 400 color M451dw - Laser Printers

HP LaserJet Pro 400 color M451dw

4.0 Excellent

The HP LaserJet Pro 400 Color Printer M451dw delivers somewhat sluggish speed, but with high-quality output and suitable paper handling for a small office or workgroup.

Get It Now

Buy It Now

About Our Expert

M. David Stone

M. David Stone

Contributing Editor

My Experience

Most of my current work for PCMag is about printers and projectors, but I've covered a wide variety of other subjects—in more than 4,000 pieces, over more than 40 years—including both computer-related areas and others ranging from ape language experiments, to politics, to cosmology, to space colonies. I've written for PCMag.com from its start, and for PC Magazine before that, as a Contributor, then a Contributing Editor, then as the Lead Analyst for Printers, Scanners, and Projectors, and now, after a short hiatus, back to Contributing Editor.

I'm pretty sure I'm the only person who worked on every "Project Printer" blockbuster PCMag ever produced, often writing 15 or more reviews for the year's big printer blowout. (I snuck in a single review one year when I was writing a book, strictly so I could keep that claim alive.)

I've always worked for PCMag as a freelancer, which has freed me to take time away to write nine books, be a major contributor to four others, and write for other publications, including Wired, Computer Shopper, Projector Central, and Science Digest, where I was Computers Editor. I also wrote a computer column at one point for The Newark Star-Ledger.

Although I started my career primarily as a science (mostly physics and astronomy) and science-fiction writer (published in Analog), my non-computer-related work runs the gamut from the Project Data Book for NASA's Upper Atmosphere Research Satellite (written for GE's Astro-Space Division) to the script for a video overview of a top company in the gaming industry (that would be gambling, not video games). My books include The Underground Guide to Color Printers (Addison-Wesley), Troubleshooting Your PC (Microsoft Press), and Faster, Smarter Digital Photography (Microsoft Press).

Having covered a wide range of subjects, I've developed a serial expertise in many of them. The ones most relevant to my current work at PCMag.com are all imaging technologies.

The Technology I Use

I buy new PCs for my writing desk infrequently, because it takes a week or more to customize the settings the way I want them. At the moment, I have an HP Envy tower running Windows 10, but it's old enough to have a Windows 7 sticker on it. Its latest lease on a longer life is courtesy of a newly installed 500GB Samsung SSD 870 EVO.

Elsewhere in my house is an assortment of older and newer PCs. The older ones are dedicated to specific tasks, like the one I've been using to slowly digitize all the paper stored in my filing cabinets, while the newer ones are testbeds for printer and projector reviews.

For writing, I use Microsoft Word 2003, because I find it too annoying to take my hands off the keyboard to give mouse commands using the Ribbon. My workhorse printers are a Xerox Phaser 6280 color laser and a Dymo LabelWriter 450 Twin Turbo for labels and stamps. I also have a Canon Pixma iP8720 for printing photos, and a Canon ImageFormula DR-C225 for scanning.

My first computer was bought to replace my IBM Selectric for writing. After rejecting both the IBM PC (which had just been introduced) and the Apple II because of the keyboards, I chose a Vector Graphics Vector 3 CP/M machine with dual floppies. The first MS-DOS machine I was willing to use for writing was the IBM AT, with its much-improved keyboard compared with the original PC and its gargantuan 20MB hard drive.

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