EKI-2548I and EKI-2548SI/MI is a cost effective managed industrial Ethernet switch which supports Fast Ethernet. To enhance reliability in industrial communication network, it equipped with Advantech owned redundant network protocol -- X-Ring, which provides users with an easy way to establish a redundant Ethernet network with ultra high-speed recovery time less than 10 ms. Furthermore, EKI-2548I and EKI-2548SI/MI also support advanced network standards to optimize network performance, reduce maintenance cost, and secure network safety.