I am very pleased (other than the lack of the auto duplex). (The description of the printer said it did 2-sided printing and I assumed duplex.) Other than that I am very pleased with the color and speed, expecially with making cards.

Great color and speed

Does not duplex; but tells you how to put paper back in for 2nd side

The $450 HP LaserJet Pro 400 Color M451nw color laser printer has nice output and is relatively speedy considering the price. However, it suffers from the same pricey toner of most entry-level color laser printers, and it lacks the automatic duplexing found in HP's slightly more expensive ‘dn' and...

Good output quality; Good performance

No automatic duplexer; Expensive toner

The HP LaserJet Pro 400 M451nw is a laser colour printer designed for the enterprise sector. It has been designed for teams of around eight users looking for a rapid, economical, wireless solution that's manageable and affordable.

Good office doc quality; Ethernet and wi-fi connectivity; ePrint; Extendable memory and paper capacities; Moderate energy consumption

No double sided; High cost per page

The HP LaserJet Pro 400 Color M451nw color laser printer has nice output and is relatively speedy considering the price. However, it suffers from the same pricey toner of most entry-level colour laser printers, and it lacks the automatic duplexing found in HP's slightly more expensive 'dn' and 'dw'...

The $450 (as of March 9, 2012) HP LaserJet Pro 400 Color M451nw color laser printer has nice output and is relatively speedy considering the price.

Good performance; Good

Expensive toner; No

HP's LaserJet Pro 400 Color M451nw is a workgroup printer that produces strong and fast output.