The dgs 3120 xstack series switches are enhanced l2 access stackable switches designed to connect end users in a secure smb or enterprise network these switches support physical stacking multicast and enhanced security making them an ideal gigabit access layer solution the dgs 3120 24tc48tc provides 20 or 44 101001000 mbps gigabit ethernet ports and 4 combo 1000base tsfp gigabit ethernet ports the dgs 3120 24pc48pc provides 24 or 48 101001000 mbps poe gigabit ethernet ports and 4 c