The HP DeskJet 4120e is an all-in-one printer designed for home use. Whether printing, scanning, copying, or faxing, it can also operate wirelessly with Wi-Fi. The 60-sheet paper tray handles larger print jobs, and the automatic document feeder makes copying and scanning very convenient.

Some HP printers are designed to work only with cartridges that have reused chips or electronic circuits from HP. These printers use dynamic security measures to block cartridges with a non-HP chip or a non-HP electronic circuit. Regular firmware updates maintain the effectiveness of these measures and can block cartridges that previously worked. Reused HP chips and electronic circuits from HP allow for the use of reused, refurbished, and refilled cartridges.