The Ruggedcom RS400 is a utility-grade serial device server that integrates a fully managed Ethernet switch, designed for challenging environments with high immunity to electromagnetic interference. It features a 4-port serial server, a range of power supply options, and supports various serial protocols, facilitating connectivity between different intelligent electronic devices while reducing overall system costs. The device operates reliably in temperatures from -40°C to +85°C and meets multiple industry standards for electrical reliability.