Reproduction Sega ST-V CN5 terminator dongle. Per the official Sega ST-V (Sega Titan Video Game System) service manual, the system "does not function if CN5 is not connected with the Board (No. 839-0724)."
The connector is required to boot the Sega ST-V. This reproduction will get you up and running if you have lost or broken the original CN5 terminator dongle. Simply plug the replacement dongle into the connector at CN5.
