Phoenix Contact 2891151 An Ethernet switch with five standard RJ45 ports features automatic detection for optimal data transmission speeds of either 10 or 100 Mbps, utilizing the RJ45 connection type. Additionally, it includes an auto-crossing function to ensure seamless connectivity and minimize errors. Furthermore, this switch also boasts a multicast filter that can block PROFINET PTCP-Delay traffic, providing enhanced network security and performance.