This communication module is proposed as an option Modicon M241/251 controllers. This module provides an Ethernet connection with 4 ports on controllers without embedded Ethernet. It also provides a second Ethernet connection with 4 ports on controllers with embedded Ethernet (except on TM241CEC24x). It is equipped with 4 x RJ45 connectors (10/100 Mbps, MDI/MDIX). Specifications Main Product or Component Type Ethernet unmanaged switch