Providing 2x 10/100Base-T(X) ports and 1x 100Base-FX SC Single-mode fiber port, this device ensures a reliable fiber optic connection of up to 30km. Built-in broadcast storm protection and QoS to process critical data in heavy traffic. The IMC-C121FB series is packaged in a compact IP40 enclosure that allows DIN-rail mounting. With its plug-and-play functionality, the converter can be easily integrated into existing network infrastructures without the need for complex configurations. Industrial Design - Fanless, standard operating temperature (-10 to 60°C), CE/FCC certified Worry-Free Guarantee: Each ORing's media converter undergoes rigorous reliability and performance testing. We aim to offer customers with high quality products. Please contact us via Newegg if any problem. '