HP LaserJet Pro 400 color Printer M451dn


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$15 off any Original HP toner when you buy a compatible LaserJet. Limit 5.

UPC: 886111731602   Part: CE957A#BGJ


  • Print professional-quality color documents on a low-cost, easy-to-use HP LaserJet. Get up and running quickly with HP Smart Install.[11] Increase productivity with faster print speeds. Save paper with automatic two-sided printing. Share the printer, using built-in Ethernet networking, and get the same black cost per page as a black-only HP LaserJet.[5]
  • Produce professional-quality color documents with ease and fast speed. Easily integrate into your office or home network. Save paper with automatic two-sided printing, and print from virtually anywhere with HP ePrint.[4]
  • 1 Hi-Speed USB 2.0 port; 1 Fast Ethernet 10/100Base-TX network port; HP ePrint, Apple AirPrint™; Up to 300 sheets capacity standard; automatic two-sided printing

Ideal for

  • Printing professional-quality color documents with an easy-to-use, low-cost networked printer.


Professional-grade speed and color

  • Boost productivity and save time with print speeds up to 21 ppm letter.
  • Produce bold text and smooth color with HP ImageREt 3600 and Original HP LaserJet toner cartridges.
  • Produce color marketing materials in-house on a range of media sizes by using tips and templates from HP.
  • Print documents affordably. Get the same black cost per page as a black-and-white HP LaserJet printer.[5]

Manageability, productivity, and mobility

  • Conserve resources and save paper, using automatic two-sided printing.
  • Proactively manage office printing with HP Web Jetadmin.
  • Share printing resources, using built-in Ethernet.

Easy-to-use and resource-conserving

  • Reduce energy use with Auto-On/Auto-Off Technology.[8] Also save with Instant-on Technology.[12]
  • Install in only a few minutes—there's no CD required with HP Smart Install.[11]
  • Receive consistent results with Original HP cartridges and easily reorder with HP SureSupply.[13]
  • Take advantage of free, easy recycling—cartridges returned through HP Planet Partners are recycled responsibly.[14]

[1]Wireless performance is dependent upon physical environment and distance from access point, and may be limited during active VPN connections.

[2]Built-in wireless is available on the HP LaserJet Pro 400 Color M451nw and M451dw only.

[3]Automatic two-sided printing is available on the HP LaserJet Pro 400 M451dn and M451dw only.

[4]Requires an Internet connection to the printer. Feature works with any Internet- and e-mail-capable device. Print times may vary. For a list of supported documents and image types, see http://www.hp.com/go/eprintcenter.

[5]Compared with HP LaserJet Pro P1566/ P1606dn printer. Assuming customer is printing at least 30% of total pages in color with content similar to the color ISO/IEC 19798 test suite (http://www.iso.org/jtc1/sc28) and overall average job length of three pages. Yields established using ISO/IEC test standards. Actual yields and costs vary considerably depending on images printed, number of color pages printed, and other factors.

[6]The 250-sheet paper tray (part number CF106A) is not included; please purchase separately.

[7]HP LaserJet CE410X Black Toner Cartridge not included; please purchase separately.

[8]HP Auto-On/Auto-Off capabilities subject to printer and settings. Actual results may vary.

[9]Mobile device must be wireless-enabled and within wireless range of the printer. Printer must be HP ePrint-enabled and may require a firmware upgrade. Feature may require the download of driver or apps to mobile device, available at http://www.hp.com/go/eprintcenter.

[10]Supports iOS 4.2 devices (iPad, iPhone 4, iPhone 3GS, and 3rd and 4th generation iPod touch) that support multitasking. Works with HP ePrint-enabled printers and all-in-ones. AirPrint and iOS 4.2 devices require an 802.11 wireless network connection to the printer. Wireless performance is dependent upon physical environment and distance from the access point. AirPrint and the AirPrint Logo are trademarks of Apple Inc. iPad, iPhone, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries.

[11]HP Smart Install works with Windows only.

[12]Compared with traditional fusing.

[13]Program features and availability may vary by country. For more information, visit http://www.hp.com/learn/suresupply.

[14]Program availability varies. HP print cartridge return and recycling is currently available in more than 50 countries and territories around the world through the HP Planet Partners program. For more information, or to request return envelopes and bulk collection boxes, visit http://www.hp.com/recycle.

[15]Ethernet networking is available on the HP LaserJet Pro 400 M451nw, M451dn, and M451dw only.

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Printer specifications

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Product Differentiator

  • 1 Hi-Speed USB 2.0 port; 1 Fast Ethernet 10/100Base-TX network port; HP ePrint, Apple AirPrint™; Up to 300 sheets capacity standard; automatic two-sided printing


  • Print

Print speed, black (normal)

  • Up to 21 ppm

Print speed, color (normal)

  • Up to 21 ppm

Print speed

  • Measured using ISO/IEC 24734, excludes first set of test documents. For more information see http://www.hp.com/go/printerclaims. Exact speed varies depending on the system configuration, software application, driver, and document complexity.

Printer page yield

  • Declared yield value in accordance with ISO/IEC 19798 in continuous printing. Actual yields vary considerably based on images printed and other factors. For more information visit: http://www.hp.com/go/learnaboutsupplies

First page out (ready) black

  • As fast as 17 sec

First page out (ready) color

  • As fast as 17 sec

Resolution (black)

  • Up to 600 x 600 dpi

Resolution (color)

  • Up to 600 x 600 dpi

Resolution technology

  • HP ImageREt 3600

Monthly duty cycle

  • Up to 40,000 pages

  • Duty cycle is defined as the maximum number of pages per month of imaged output. This value provides a comparison of product robustness in relation to other HP LaserJet or HP Color LaserJet devices, and enables appropriate deployment of printers and MFPs to satisfy the demands of connected individuals or groups.

Recommended monthly page volume

  • 750 to 2000

  • HP recommends that the number of printed pages per month be within the stated range for optimum device performance, based on factors including supplies replacement intervals and device life over an extended warranty period.

Print Technology

  • Laser


  • 2-line LCD (text)

Processor speed

  • 600 MHz

Number of print cartridges

  • 4 (1 each black, cyan, magenta, yellow)

Replacement cartridges

  • HP 305A Black LaserJet Toner Cartridge (yield ~2200 pages) CE410A; HP 305X Black LaserJet Toner Cartridge (yield ~4000 pages) CE410X; HP 305A Cyan LaserJet Toner Cartridge (yield ~2600 pages) CE411A; HP 305A Yellow LaserJet Toner Cartridge (yield ~2600 pages) CE412A; HP 305A Magenta LaserJet Toner Cartridge (yield ~2600 pages) CE413A

Print languages

  • HP PCL 6, HP PCL 5c, HP postscript level 3 emulation

Automatic paper sensor

  • No

Paper trays, standard

  • 2

Paper trays, maximum

  • 3


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Mobile printing capability

  • HP ePrint, Apple AirPrint™

HP ePrint capability

  • Yes

Connectivity, standard

  • 1 Hi-Speed USB 2.0 port; 1 Fast Ethernet 10/100Base-TX network port

Network ready

  • Standard (built-in Fast Ethernet)


  • 1 Hi-Speed USB 2.0; 1 Fast Ethernet


  • Embedded Web Server: password-protection, secure browsing via SSL/TLS; Network: enable/disable network ports and features, SNMPv1 community password change; HP ePrint: HTTPS with certificate validation, HTTP Basic Access Authentication, SASL authentication

Minimum system requirements

  • Windows 8, Windows 7 (32-bit/64-bit), Windows Vista (32-bit/64-bit): 1 GHz 32-bit (x86) or 64-bit (x64) processor, 1 GB RAM (32-bit) or 2 GB RAM (64-bit), 400 MB hard disk space, CD-ROM/DVD-ROM or Internet, USB or Network port; Windows XP (32-bit) (SP2): Pentium® 233 MHz processor, 512 MB RAM, 400 MB hard disk space, CD-ROM/DVD-ROM or Internet, USB or Network port

  • Mac OSX v 10.5, v 10.6; PowerPC G4, G5, or Intel® Core™ Processor; 500 MB hard disk; CD-ROM/DVD-ROM or Internet; USB or Network port

Compatible operating systems

  • Full software installs supported on: Windows 8, Windows 7 (32-bit and 64-bit), Windows Vista (32-bit and 64-bit), Windows XP (32-bit) (SP2 or higher); Driver only installs supported on: Windows Server 2008 (32-bit and 64-bit), Windows Server 2003 (32-bit) (SP3 or higher); Mac OS X v 10.5, v 10.6, v 10.7; Linpus Linux (9.4, 9.5), Red Hat Enterprise Linux (5.0, 6.0), OpenSUSE Linux (11.3, 11.4), Fedora (14, 15), Ubuntu (10.04, 10.10, 11.04), Debian (5.0, 6.0 and HPUX11i)

Memory specs

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Memory card compatibility

  • None

Memory, standard

  • 128 MB

Memory, maximum

  • 384 MB

Printer management

  • Windows: HP Device Toolbox (default install), SNP Alerts (minimum network install), HP Web Jetadmin (download); Mac: HP Utility

Supported network protocols

  • Via built-in networking solution: TCP/IP, IPv4, IPv6; Print: TCP-IP port 9100 Direct Mode, LPD (raw queue support only), Web Services Printing; Discovery: SLP, Bonjour, Web Services Discovery; IP Config: IPv4 (BootP, DHCP, AutoIP, Manual), IPv6 (Stateless), IPP Print, SSL Security and Certificate management, Apple AirPrint™

Hard disk

  • None

Paper handling

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Paper handling input, standard

  • 50-sheet multipurpose tray, 250-sheet input tray 2

Paper handling output, standard

  • 150-sheet output bin

Duplex printing

  • Automatic (standard)

Finished output handling

  • Sheetfed

Media sizes supported

  • Tray 1: Letter, legal, executive, 8.5 x 13 in, 3 x 5 in, 4 x 6 in, 5 x 8 in, envelopes (No 10, Monarch); Tray 2, optional Tray 3: Letter, legal, executive, 8.5 x 13 in, 4 x 6 in, 5 x 8 in, envelopes (No 10, Monarch); Automatic duplexer: Letter, legal, executive, 8.5 x 13 in

Media sizes supported

  • Tray 1: A4, A5, A6, B5 (JIS), 16K, 10 x 15 cm, postcards (JIS single, JIS double), envelopes (ISO DL, ISO C5, ISO B5); Tray 2, optional Tray 3: A4, A5, A6, B5 (JIS), 16K, 10 x 15 cm, postcards (JIS single, JIS double), envelopes (ISO DL, ISO C5, ISO B5); Automatic duplexer: A4, B5

Media sizes, custom

  • Tray 1: 3 x 5 to 8.5 x 14 in; Tray 2, optional Tray 3: 3.94 x 5.83 to 8.5 x 14 in

Media types

  • Paper (bond, brochure, colored, glossy, letterhead, photo, plain, preprinted, prepunched, recycled, rough), postcards, transparencies, labels, envelopes

Supported media weight

  • Tray 1: 16 to 47 lb (up to 58 lb with HP Color laser glossy photo papers); Tray 2, optional Tray 3: 16 to 43 lb (up to 47 lb with postcards, up to 58 lb with HP Color laser glossy photo papers); Automatic duplexer: 16 to 43 lb

Media weights by paper path

  • Tray 1: 60 to 176 g/m² (up to 220 g/m² with postcards and HP Color laser glossy photo papers); Tray 2, optional Tray 3: 60 to 163 g/m² (up to 176 g/m² with postcards); Automatic duplexer: 60 to 163 g/m²

Power & operating requirements

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  • Input voltage: 110 to 127 VAC (+/- 10%), 60 Hz (+/- 3 Hz)

Power consumption

  • 425 watts (Active), 15.2 watts (Ready), 4.0 watts (Sleep), 0.5 watts (Off)

  • Power requirements are based on the country/region where the printer is sold. Do not convert operating voltages. This will damage the printer and void the product warranty.

Energy efficiency

  • ENERGY STAR® qualified; EPEAT® Silver

Operating temperature range

  • 59 to 86ºF

Operating humidity range

  • 20 to 70% RH (non-condensing)

Dimensions & weight

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Dimensions (W x D x H)

  • 15.9 x 19.1 x 12.7 in

Maximum dimensions (W x D x H)

  • 15.9 x 27.1 x 12.7 in


  • 52.1 lb

Package weight

  • 62 lb

What's included

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What's in the box

  • Printer; Four preinstalled introductory HP LaserJet toner cartridges (yield ~1400 pages); In-box documentation (Hardware installation guide); Software drivers and documentation on CD-ROMs; Power cord; Built-in Automatic duplexer for two-sided printing

Cable included

  • No, please purchase USB cable separately


  • One-year limited warranty, return to HP or authorized service provider

Software included

  • Windows: HP Installer/Uninstaller, HP PCL 6 print driver, Status Alerts, HP Update, DXP; Mac: HP Installer/Uninstaller, HP Postscript driver, HP Setup Assistant, HP Utility, HP Alerts, HP Firmware Updater

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Customer ratings and reviews for HP LaserJet Pro 400 color Printer M451dn

Rated 5 out of 5 by nice workhorse nice color laser printer for a small business setting, good for signs, everyday printing, not the fastest printer out there but a lot of bang for the buck May 7, 2013
Rated 5 out of 5 by Fantastic! This printer is great. First of all, hp website is so easy to use. Ordered at a great price & cartridges at a discount. Got it delivered in a couple of days as promised. Set-up was phenomenal - so quick and easy! February 11, 2013
Rated 5 out of 5 by Nice printer! I received the printer this morning. It is replacing a fairly new Epson Artison 810. I got tired of always replacing ink, the cartridges are very small. At work I have an HP and its been very reliable. I literally took it out of the box, removed some tape for shipping, plugged the power cord followed by an ethernet cable to my router and powered on. That is it! Mac installation is always easy but this was extra breezy! My iPhone, iPad and iMac all recognized the printer without needing any special software at all. I guess the included CD is for the Windows crowd. I was hesitant to buy because some of the earlier reviews mentioned difficulty changing 2-sided printing and difficulty changing to just black and white. I suppose this might be a Windows issue, if any, because for Mac users a 2 year old could figure both out without installing any software! The only thing about the printer was that I noticed a little bit of a strange noise when it's starting up from power-save mode. It goes for a few seconds and goes away. I am hoping it just needs a little breaking in since it goes away quickly. Also the Airprint feature does not allow for choosing between black and white or color. It does allow for 2-sided preference selection. So that means that when I print from my iPhone or iPad I will only be able to print in color but I can choose 2-sided printing. Not a big deal! I am printing from a mobile device! As you can see the Pro's are great and the cons seem very minimal. I had lot's of projects I was working on today and it came at a good time. Since I used it quite a bit today I wanted to review it since I was quickly impressed. I hope you get it while it's still on sale! Can't beat this printer, with features, for the price! August 3, 2012
Rated 5 out of 5 by Fantastic Deal for Hawaii I have been looking for a quality business level Color Laser Printer for around a year. I have owned HP printers and still do. My first a Laserjet II, then Laserjet 6MP(maybe the best B/W printer ever for its day) and still works today except the plastic is brittle and breaking, Epson 1500 (a bust, never worked right), then finally a HP 6127 Inkjet. The HP 6127 is another great printer. It just works and prints anything and everything you send it on the network from any of my computers. My HP 6127 is beginning to age and the ink cartridges are getting harder to find. So with the cost of color laser printers coming down was thinking I could find a HP unit for around $1K that would be very reliable and versatile. I seem to end up printing on card stock, game cards, index cards, and printing pictures and wanted a printer that would print from anything; have machines from win2000 through macs and ipads and iphones. I looked around and saw the HP M451 Color Printer on sale at local store. I had asked about the higher end color printers there before and was directed to another supplier as it was not a common printer and demand was low. The HP M451 features were intriguing. So I decided to call HP for additional presales information. The sales person was very polite and answered as many of my questions as she could. When I told her I saw the printer here locally on sale, she told me it was on sale at the HP Office Store too. Ok, I figured was same price and HP could never ship it to Hawaii and beat the local store. I was completely blown away when I learned that the HP price was cheaper and SHIPPING TO HAWAII WAS FREE!!! Thank You HP!!! Only a few other stores do this, Amazon being one. Printer arrived here in Hawaii two days later (earlier than forecasted). I opened the box, setup the printer, plugged it into the network, and turned it on. Only minor thing was a sheet of paper must have been missing telling me what to do to remove the printer packing material... but I knew the cartridges were sealed and I needed to remove packing tape from previous printer setups. The printer works great. The Mac recognized it immediately. Had some minor issues with XP, but finally got drivers loaded on my multiple machines. My windows 2000 machine was the only issue. There is a windows 2000 folder on the driver disk and it attempted to load it, but it gives an error at the last step. So I used the HP 6mp driver to print to it. This works for simple stuff. I cannot do the duplexing and I cannot do card printing as the margins don't get set correctly. So gave HP a 4 as they really should have supported earlier software; easy to do. Overall this printer is a fantastic printer. It sits silently on the network in power saving mode. It wakes up when you send print jobs to it. It cleans itself. It goes back to sleep. I did have one file I sent it and something choked. It never woke up and printed. It was a big graphics job. Maybe there was a problem with too much graphics information (not enough memory in printer) or a bad HTML translation. Besides this, the printer just works. Next, plan to setup its email address so I can print with my ipad to it. Time will tell if this printer has the lasting endurance of ALL my previous HP printers. So far, HP has not let me down. April 27, 2012

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Owner support

Warranty information

This product is covered by the standard HP warranty

Support information

Support for this product is provided by HP Customer Care

Returns & exchange information

The HP Home & Home Office Store will accept returns or exchanges for this product up to 21 days after delivery

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Special features

Duplex Printing

Automatically print on both sides of the page

HP ePrint

This product has HP ePrint features

Color printing

Produce professional-quality color documents

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