IS420ESWBH3A is an Ethernet IONet Switch manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Gas Turbine Control Systems. It is available in 8 ports, 10/100BASE-TX. The ESWB Ethernet 10/100 switches are specially designed to meet the needs of real-time industrial control solutions and are required for all IONet switches used in Mark VIe & VIeS safety control systems. It is a DIN - Rail mounting module. To meet the requirements for speed and functionality the following features are provided.