buy Switch D-Link DGS-1520-28MP/E . The DGS-1520-28MP/E switch from D-Link is a professional network device designed for business environments requiring high capacity and flexible connection management. It is a black rack-mount switch with a compact size that fits the 19-inch rack standard and 1U height, ideal for saving space in data centers or telecom cabinets. It features a total of 24 Ethernet LAN ports, including 20 RJ-45 ports compatible with PoE supporting IEEE 802.3af and 802.3at standards, allowing connected devices to be powered via Power over Ethernet with an energy budget of up to 370 W, expandable to 740 W with a redundant power supply (RPS). Additionally, it includes 2 10GBASE-T ports and 2 10G SFP+ ports, providing high-speed connections for uplinks or aggregation, ensuring efficient, low-latency traffic up to 10 Gbps. Its switching capacity of 140 Gbps and MAC table of up to 16,384 entries enable smooth management of large networks with multiple connected devices. Regarding standards, it supports a wide range from basic Ethernet 10/100/1000BASE-T to advanced technologies such as IEEE 802.3ae (10 Gigabit Ethernet), flow control 802.3x, and energy efficiency IEEE 802.3az, optimizing performance and power consumption. On the software side, it includes comprehensive layer 2 and 3 features, including multiple Spanning Tree protocols (STP, RSTP, MSTP), advanced VLANs (supporting up to 4,000 groups and double VLAN Q-in-Q), quality of service (QoS) with eight queues per port and bandwidth management, as well as extensive access control lists (ACL) with up to 1,536 hardware entries to ensure security and traffic segmentation. It also offers 802.1X authentication, DoS attack protection, and DHCP snooping, along with flexible remote management via web interface, CLI, SNMP, and IPv6 support, facilitating integration into modern infrastructures. It has a robust design weighing 4.3 kg with dimensions of 441 x 308.5 x 44 mm, and a high MTBF of approximately 334,000 hours guarantees reliability. This model is ideal for companies needing a powerful, adaptable switch with PoE support and advanced management and security capabilities to optimize converged networks and voice, data, and video services in corporate infrastructures. Product with plug: YesType of plug: Plug EUType: SwitchStackableColour: BlackConnections: 2RJ-45 x 20SFP+Ethernet LANPower: 370 WNumber of slots: 2Form factor: 1USafety: IGMP