EKI-2528PAI ruggedized eight-port unmanaged power-over-Ethernet (PoE) switch has eight 10/100BaseTX Ethernet ports, four of which can supply power to PoE-compliant devices. With an internal dc-to-dc converter, 24 Vdc input power is boosted to the 48 Vdc required for powering PoE-compliant devices. Packaged in a DIN-rail mount metal chassis, the switch has redundant power inputs, 4,000 Vdc Ethernet ESD protection and power line surge (EFT) protection of 3,000 Vdc.