Gigabit Web managed layer 2 ethernet switch, with GE up-link ports, developed for meeting high-performance network requirements. It offers abundant security access policies and enhanced network manageability and maintenance. This makes it ideal for diversified network building scenarios, including government, small and medium-sized enterprises, general and vocational education, security monitoring, and hotels. Product features: Multi-type port access: comes with standard full Gigabit electrical ports and optical ports, making it a good fit for complex network environments and network expansion. The S1850V2-52P-EI includes 48 10/100/1000Base-T electrical ports and 4 1000Base-X SFP optical ports. Simplified Web management: provides convenient and intelligent Web management with visual port configuration and easy-to-operate pages. Abundant features: supports abundant software features such as VLAN division, 802.3x, link aggregation, and IGMP Snooping. High reliability: supports STP/RSTP/MSTP link protection, built-in loopback test, cable detection, and remote loopback detection. Comprehensive security control policies: supports DoS attack detection, ARP anti-attack, TCP attack defense, and port security functions. Green and energy-saving design: implements the built-in intelligent port speed limit and energy-saving hibernation functions, and the whole device adopts various green energy-saving designs. It is also compliant with the EU RoHS standard for material environmental protection and safety.