D-Link DGS-3100-48 Managed Network Switch - 48-Port 10/100/1000 Gigabit Stackable

The DGS-3100-48 switch is a managed Layer 2 Gigabit stackable switch designed as feature-rich, low-cost devices in the entry-level network management category. It consists of 48 Ports 10/100/1000Mbps with up to 20Gbps physical stacking ability. Outstanding features include scalable expansion, 4 combo SFP fiber links, comprehensive network security, granular bandwidth control and extensive network management. SMB looking for a flexible, advanced but affordable solution can deploy these switches to set up Gigabit connections to their desktops or build up a company-wide network backbone.The switch comes with 2 dedicated HDMI stacking ports, each providing 5Gbps stacking bandwidth (up to 20Gbps for overall system in full-duplex mode, bi-directional). Up to 6 units, 288 10/100/1000Mbps ports can be stacked up in a linear or fault-tolerant Ring topology. A stack can consist of 10/100/1000Mbps switches, 10/100/1000Mbps PoE switches, or a combination of both types, with up to 24 SFP fiber links. Units can be gradually added to the stack to accommodate growth, while expansion beyond a single stack is possible using Gigabit port trunks between stacks, or from stack to network backbone and server paths.The DGS-3100-48 includes many security features including Access Control List (ACL), 802.1X Port-Based/MAC-Based Access Control and 802.1X Guest VLAN to make network access available to authorized users. To prevent malicious attack and virus/worm affection from overwhelming the switch