This Altivar Profinet communication module has 2 ports with RJ45 connectors.It is compatible with Altivar Process ATV600 (ATV630, ATV650), Altivar Process ATV900 (ATV930, ATV950), Altivar Machine ATV320, Altivar 32 and Altivar Machine ATV340.Removable module allows last minute decisions on drive communication protocol and thus facilitates installation project management.