The D-Link Systems DGS-3130-30PS DGS-3130 series 30-port L2+ fully managed gigabit POE switch is a cost-effective solution for medium to large businesses that need to manage a large number of network devices. The switch features a high-performance L2+ switching engine and supports a wide range of network protocols, making it a perfect choice for connecting devices such as servers, switches, and routers. The switch also supports Layer 2 and Layer 3 switching, making it a versatile solution for connecting devices in your network.