Triconex 4352B Communication Module (TCM) 100% Original NewSpecifications: Network Ports 2, 10 100BaseT Ethernet ports, RJ 45 connectors (models 4351, 4351A, 4351B, and 4353; NET 2 port on 4353 supports only 100 Mbps) 2, fiber optic mode Ethernet ports, MT RJ connectors with 62. 5 125 um fiber cables (models 4352, 4352A, 4352B, and 4354) Communication Speed Copper Ethernet ports: 10 100 Mbps (NET 2 port on model 4353 supports only 100 Mbps connections) Fiber Ethernet ports: 100 Mbps 10 100BaseTX Connector RJ