The DGS-3420 Series of next generation Layer 2+ Gigabit switches delivers performance, flexibility, security, multi-layer Qo S & access control, along with redundant power solutions for SMBs & enterprises. With high Gigabit port densities, Gigabit SFP & 10-Gigabit SFP+ support, & advanced software solutions, these switches can act as either departmental access layer devices or aggregation switches to form a multilevel network structured with backbone & centralized high-speed servers. Service providers can take advantage of the high SFP density switches to structure the aggregation of Fibre to the Building (FTTB) networks that they extend to the subscriber's sites.