This is a wire extender for the ZN031 - ABPROG EEPROM/BCM adapter, used to read chips without removing them from the PCB in tasks such as reading the EEPROM of the FEM/BDC module in BMW

F-series vehicles.

The photo below shows how to connect to a BMW BDC and a FEM unit to read the EEPROM:

The photo below shows how to connect to a BMW BDC and a FEM unit to read the EEPROM: