D-Link Systems 20-Port Gigabit Web Smart Switch including 4 Gigabit SFP Ports (DGS-1210-20) Displays MAC address, IP Address, DHCP hostname Discover via active directory authentication of the insight agent Insight Plus will report client security Time when device was last seen transmitting data on the network Sixteen (16) 10/100/1000BASE-T Ports Four (4) Gigabit SFP Ports Supports 802.1Q VLAN, Auto Voice VLAN and Auto Surveillance VLAN Advanced features include QoS, Bandwidth Limiting, Link Aggregation, Port Mirroring, Spanning Tree and IGMP Snooping Security features include Access Control List (ACL), 802.1X / RADIUS, ARP Spoofing Prevention, and D-Link Safeguard Engine Easily managed using intuitive GUI, D-Link Network Assistant Utility, D-View 7, Compact CLI or SNMP Limited Lifetime Warranty