Arjan II logic computer

The Arjan II logic computer was a verbobrain that was created to be a direct competitor to the AAA-2 VerboBrain, made popular by the 3P0-series protocol droids. The computer was found primarily as the central processor of the Roche J9 worker drone. Due to the droid's staggering unpopularity, the Arjan II never had the market share to keep up with its competitor.

Source

 * Cynabar's Fantastic Technology: Droids
 * The New Essential Guide to Droids