D links 48 port third generation smart switch is part of d links third generation of web smart switches designed to provide small to medium businesses complete control over their networkin a 19 metal case with innovative fanless design the switch incorporates a complete lineup of layer 2 features including port mirroring spanning tree link aggregation and igmp snooping network maintenance features include loopback detection and cable diagnosticsthe des 1210 52 features state of the ar