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HP LaserJet Pro 400 M451dw Workgroup Up to 21 ppm 600 x 600 dpi Color Print Quality Color Wireless 802.11b/g/n Laser Printer

  • Up to 21 ppm
  • 600 x 600 dpi Black Print Quality
  • Ethernet 10/100BaseTX (RJ-45)
  • Up to 40,000 pages monthly
  • 128 MB Memory, std.
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Learn more about the Hewlett-Packard M451dw

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Hewlett-Packard M451dw

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  • Steven J.
  • 9/22/2014 8:07:29 AM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week

4 out of 5 eggs

This review is from: HP LaserJet Pro 400 M451dw Workgroup Up to 21 ppm 600 x 600 dpi Color Print Quality Color Wireless 802.11b/g/n Laser Printer

Pros: Has ePrint (AirPrint + CloudPrint), HTTPS, certificates, protocol lockdown, good power settings, and Wireless Direct.
You can turn on HTTPS for the web server, setup your own certificates and CA, disable every network protocol you don't need, turn on Wireless Direct so guests don't need access to your home network, and disable PJL. This was pretty easy to do after updating the firmware: one pass through all the settings, then saving them as an XML file to my computer. The only thing I have to do when I have guests is turn on Wireless Direct, they can handle the rest. There is an NFC "module" for this (the 1200W), but that's a little too esoteric.

Cons: There is one flaw in the newest firmware: if you lock down the settings from the web server, it disables menu access from the printer's control panel, but pressing the WiFi button seems to get you past this barrier, and someone in front of the device could change the Wireless Direct settings to allow open access to your network. As usual, when someone has physical access to a device, all bets are off, but this seems like a particularly careless mistake.
Those adding RAM to their printers should take note that the 300/400 series user manual's diagrams are incorrect for this printer, you can't use SDRAM (two notches on a SODIMM stick), you must use a 144pin SODIMM (DDR2?) with one notch. Incidentally my 2605dn took SDRAM, so I thought I could move that stick to this printer.

Other Thoughts: I don't use CloudPrint much, but it's pretty handy, and Android has a printing plugin from HP for the times you're on the same network.
EcoSMART is pretty good, and there's a handy meter showing you (relatively) how much power is used on standby with the current settings. Unlike older models, these newer HP printers tend to manage their power state themselves, which is good for those of us who forget to turn things off; I just wish there were even more aggressive choices.
The print quality has been pretty good so far, clean and sharp. I won't be printing anything in continuous color like snapshots with this, but I figure that's the tradeoff: you can either have a machine that churns out hundreds of crisp duplex pages at once and can be off for weeks/months, or you can have gorgeous glossy 4x6 snapshots.

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  • Phillip R.
  • 12/17/2013 8:47:49 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsHP-M451dw

This review is from: HP LaserJet Pro 400 M451dw Workgroup Up to 21 ppm 600 x 600 dpi Color Print Quality Color Wireless 802.11b/g/n Laser Printer

Pros: Easy setup and installation. Print quality is very good.

Cons: Information regarding wireless and wired networking could be better. Starter cartridges are low capacity.

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