In February 2012 HP introduced the LaserJet Pro 300 Color M351 and Pro 400 Color M451 printers and the LaserJet Pro 300 Color MFP M375 and Pro 400 Color MFP M475 MFPs. Print speeds ranged from 18 pages per minute (ppm) in both black and color printing for the printers and 21 ppm in both black and color printing for the MFPs.

The supplies set for all models is made up of all-in-one cartridges with page yields of 2,200 for black and 2,600 for cyan, magenta and yellow. All but the M351 also use a 4,000 page high yield black cartridge. Both the toner hopper and waste bin sections of the introductory (starter) cartridges are smaller than those in the standard versions and hold a smaller toner load and less waste toner. All toner cartridges require chips for the printers to function correctly.

HP Color LaserJet Pro 400 M451