An efficient, wireless MFP with fax for high-quality color and productivity.[2] Save time with Smart Tasks in HP Smart app, and print and scan from your phone.[3] Get seamless connections and strong security designed to help detect and stop attacks.
HP Personal Laser Multifunction Printers are designed for individuals or small workteams who need affordable, reliable multifunction performance in a compact and easy-to-use desktop device.
This printer is intended to work only with cartridges that have a new or reused HP chip, and it uses dynamic security measures to block cartridges using a non-HP chip. Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. 

20ppm Black & Color, Res 600x600dpi, 192MB Memory, 540MHz processor, USB2.0, Duplex, Network, Paper Format: A3, Duty Cycle 75,000 pages

The HP PSC D4120 All-in-One Printer combines essential printing, scanning, copying, and mobile faxing functionalities into a single compact device.

Functions: Print, copy, scan
Print speed: Print speed up to 21 ppm 1
Print quality black (best): Up to 1,200 x 1,200 dpi

All-In-One Solution For Efficient Office Printing

Designed for high-volume, high-speed document printing

Functions: Print
Print speed: Up to 40 ppm (A4) 1
Print quality black (best): Fine Lines (1200 x 1200 dpi)

Get blazing fast printing speeds, high-volume scanning, and easy management tools with LaserJet Pro.

HP OfficeJet Pro 9720 Wide Format All-in-One Printer: Print, copy, 

Say hello to the wide format professional colour inkjet printer for your growing business from the World’s #1 Printer Company, paired with the easiest-to-use print app. Print and scan up to A3 with extra performance features