Free D-View 7 Network Management System comes with a license for 25 nodes and 2 probes and full access to the management tools<br />Features loopback detection and cable diagnostics to help network administrators find and solve network problems quickly and easily<br />Green technology enables the DGS-1100 smart managed switches to save power without sacrificing performance<br />Most of the models in the series utilize a fanless design, for silent and energy-efficient operation ">