The Medium Printer is a base module capable of printing larger, more expensive objects than the backpack printer. It costs 2 Copper to construct and consumes 4 bars of power (the entirety of its internal battery) to print one object. Like all modules, it is constructed on top of a level 2 platform.
Cycling through the printer module's available schematics will fill the input slots with the appropriate resources if they are attached to its base, either directly or via Medium Storage.