They clip in easily, once the carrier has moved to the maintenance position on the carriage. The heads are integral with the ink cartridges in this machine, so you get a new head every time you change the black or other tri-colour ones. Hinge the whole of the printer’s top cover up and you have access to its twin print cartridges. The only sockets at the rear are for mains power and USB connection to a PC or Mac. The button with the error indicator forces a paper feed. There are no fripperies like memory card slots and the only indicators, each set in their own button, are for power and error condition.
