MOXIE instruments, which employ MOXIE (Mars Oxygen In situ resource utilization Experiment) technology, produce oxygen from the rich amounts of carbon dioxide in the Martian atmosphere.
They cannot produce anything during Dust Storms.
Background[]
Developed in the 20th century but first tested on a rover mission to Mars in the early 20s of the 21st century, that once-experimental technology now forms the backbone of Life Support in the first colony. These instruments require nothing but power and regular maintenance and of course, a connection to the lifeline of the colony.