In May 2011 HP introduced the monochrome LaserJet Enterprise M4555 MFP worldwide. OEM specifications list a print speed of 52 pages per minute (ppm) and a monthly duty cycle of 250,000 pages per month. Functionality includes printing, copying and scanning with faxing optional. A dedicated fax model is also available.
The supplies set is made up of 10,000 page standard yield and 24,000 page high
yield all-in-one cartridges. A new chip is required on the cartridges for correct printer operation.