What HP says about these units: -

Tackle large-volume print jobs with ease, and enable printing policies with top-flight expandability. Improve security and quickly adapt to changes within your managed printing environment with a host of manageability features.

Keep your workflow moving with fast output and precision paper handling

Print at rapid speeds on a variety of paper types.
Manage workflow with intuitive features right on the printer, and get quick prints from a flash drive.
Produce high print volumes with low maintenance.
Replace toner cartridges easily, and enjoy quiet, clean performance

Take the lead in meeting companywide conservation goals, with energy-saving features from HP

Cut energy use as much as 45%, compared to a majority of competing laser printers, with this Energy Star qualified printer
Get centralised access to custom energy-saving options and printer settings with the HP EcoSMART Console.
Trim paper use by up to 50% with automatic two-sided printing (optional).