Bosch KOM. ADAPTER 068080-101 Communication Module

Got a pair of these Bosch communication adapters. They're older units, model 068080-101, made in Germany. They have the DB15 serial style ports on the front. Not sure exactly what machine or system these came off of, but they look solid. Selling as-is since I don't have the gear to test them right now. Great if you're looking for specific vintage industrial or automotive diagnostic parts.