... switch set rate and rate adaptive optional, use for point to point topology, multi mode fiber 0~2Km, single ... DIP switch set rate and rate adaptive optional, use for daisy chain, star, ring and other network topologies, ... switch set rate and rate adaptive optional, use for point to point topology, multi mode fiber 0~2Km, single ... dual DP and dual optical port for siemens plc OLM application ci-pf22-s