IIoT industrial switches are ruggedized, high-reliability networking devices designed as the backbone for critical communication in harsh industrial environments. Unlike commercial switches, they are built to withstand extreme temperatures, vibrations, and electromagnetic interference. Key features often include managed capabilities for real-time network control and monitoring, support for industrial protocols like PROFINET and EtherNet/IP, and redundant ring technologies such as ERPS or RSTP to ensure millisecond-level network recovery and maximize uptime. By providing deterministic and resilient connectivity for machines, PLCs, and sensors, they form the robust data highway that is essential for Industrial IoT applications, enabling real-time control, predictive maintenance, and operational intelligence.