A neural processor is a device implanted in the nervous system of every Borg drone containing a record of all the information received from the Collective.
After the USS Enterprise NCC-1701-E traveled back in time from 2373 to 2063, Captain Jean-Luc Picard removed the neural processor implanted in the newly-assimilated Ensign Lynch, located in the abdomen. Attaching it to a tricorder, Picard was able to access the processor and discovered the Borg's plot to transform the Enterprise's deflector dish into an interplexing beacon with which to establish a link with the Borg living in the 21st century.
This replica is made from Marlboro lighters (like the original) wire tubing, and other greeblies. It also has several blinking LEDs that activate when you press the lighter button. Built by Nuclearsphinx.