Ion Cube Fabricators can create Ion Cubes in just a few minutes (at most). This power is drawn from the thermal plant.
Information on creating ion cubes.
Sonic deterents keep away sea creatures from the Sea Emperor Leviathan containment facility.
Precurser building blocks feature both technological and genetic parts, similar to the warpers.
The Organic Matter Particulator destroys all organisms exposed to it while leaving inorganic structures unharmed. While this would function well as a weapon, chances are it was used to combat the infection.
The Precursors had translation devices that contains data for over a thousand languages, including a number of ancient Earth lannguages. Unfortunately, it's designed only to work to translate for the Precursors own language and not other ways around.
The nanobots created by the Precursors are much smaller than those used by the Federation.
The technology of the Precursors is far above that of the Federation.