The SX5E-HU055B is a compact unmanaged industrial Ethernet switch featuring 5 ports with 10/100 Mbps transmission rate and half/full duplex operation. It operates across a wide voltage range of 9–60 V DC or 18–30 V AC and maintains functionality from -40 °C to +75 °C, making it suitable for demanding industrial environments. The switch includes redundant power inputs with surge protection diodes, broadcast storm protection, auto-negotiation, and auto MDI/MDIX cable sensing, all housed in a rugged metal enclosure with IP30 protection. It is rated for hazardous locations (Class 1, Division 2) and employs store-and-forward switching technology for reliable data transmission. These features make it ideal for automation systems, process control networks, and safety-critical applications in industrial facilities.