48 Port 10/100 Base-T POE Switch with 2 x 10/100/1000 Base-T Ports • Support 2 x 10/100/1000 Base-T/SFP Combo Slots • IEEE 802.1Q Virtual LAN (VLAN) • Support  IGMP and MLD Snooping • Support Auto Surveillance and Auto Voice VLAN • Broadcast, Unicast and Multicast Storm Control • Support Smart IP-MAC-Port Binding • Support IEEE 802.1p QOS and COS • 802.1x port-base Authentication through RADIUS servers