Our compatible HP Color LaserJet Pro 400 M451dn toner cartridges are a cost-effective alternative to genuine HP cartridges without sacrificing print quality. Each toner cartridges is designed specifically for your printer's functions and capabilities, ensuring easy installation into your printer. We test every one of our toner cartridges for HP Color LaserJet Pro 400 M451dn printers for performance and page quality, so you can be confident our products will deliver the same quality prints as an original HP cartridge for less. Our comprehensive 1-Year warranty covers all aspects of the cartridge, including print quality, performance, and page-yield. We value our customers and guarantee your satisfaction with our products. In the unlikely event that you are not entirely satisfied with your purchase, we will replace the cartridge or provide you a refund.