D-LINK DGS-1210-52, Gigabit Smart Switch with 48 10/100/1000Base-T ports and 4 Gigabit MiniGBIC (SFP) ports, 802.3x Flow Control, 802.3ad Link Aggregation, 802.1Q VLAN, 802.1p Priority Queues, Port mirroring, Jumbo Frame support, 802.1D STP, ACL, LLDP, Ca