buy Switch D-Link DGS-1520-28/E . The DGS-1520-28/E switch from D-Link is an advanced network device designed for professional environments requiring high capacity and reliability in data switching. With a 19-inch standard rack form factor and 1U height, its compact and robust black design facilitates integration into network cabinets. It features a total of 28 ports, including 24 10/100/1000BASE-T ports for Gigabit Ethernet copper connections, plus 2 10GBASE-T ports and 2 10 Gigabit SFP+ ports that enable high-speed links and flexible fiber or compatible module connections. It supports multiple Ethernet standards such as IEEE 802.3ab for Gigabit copper, IEEE 802.3z for Gigabit fiber, and IEEE 802.3ae for 10 Gigabit networks, ensuring interoperability with modern infrastructures. Its switching capacity reaches 128 Gbps, with a store-and-forward transmission architecture that guarantees integrity and efficiency in network traffic processing, and a MAC table capable of managing up to 16,384 addresses for effective local network control. Regarding power, it accepts a standard input range from 100 to 240 VAC, with a maximum consumption of 30.4 W, facilitating installation in various power setups and contributing to efficient operation. Its physical specs include a lightweight 2.33 kg weight and dimensions of 441 x 207.4 x 44 mm, with an acoustic level of 51.8 dB(A), optimizing installation in office or data center environments without excessive noise. This switch includes advanced layer 2 and layer 3 features, such as support for Spanning Tree protocols (STP, RSTP, MSTP), link aggregation (LACP) to increase bandwidth and redundancy, multiple VLANs (up to 4,000 groups), QoS with eight queues per port, and mechanisms for congestion management and bandwidth control. It also supports a wide range of security features, including DoS attack protection, DHCP snooping, dynamic ARP inspection, 802.1X authentication for access control, as well as secure access via SSH and SSL, ensuring a protected and controlled network environment. Its management is versatile, with a web interface for graphical administration, advanced CLI, SNMP v1, v2c, v3 support, and automatic configuration options like Zero Touch Provisioning, facilitating integration and maintenance in complex networks. In summary, the DGS-1520-28/E from D-Link is a high-performance professional switch suitable for infrastructures demanding Gigabit and 10 Gigabit connections, energy-efficient, and equipped with advanced security and management features, ideal for business environments requiring scalability and reliability in their networks. Product with plug: YesType of plug: Plug EUType: SwitchCupboardStackableSpeed: 1 GbpsPorts: 28Colour: BlackNumber of slots: 2Form factor: 1UApprox. temperature: -40º / 70ºSafety: IGMPAccuracy (relative humidity): 10 % - 95 %Connections: SFP+