D-Link DGS-3630-28SC/SI Brand New Includes Lifetime Warranty The D-Link 28-Port L3 Fully Managed Gigabit SFP Switch is designed for Small Medium Businesses SMBs , Small Medium Enterprises SMEs , larger Enterprises, and ISPs. It features 20 x 100/1000 SFP ports, 4 x 10/100/1000 or SFP combo ports, and 4 x 10GbE SFP ports. This switch supports core SMB and SME functionality, such as L2 switching, entry-level routing, L2 multicast, advanced QoS, OAM, and robust security features. With Gigabit Ethernet RJ45 and SFP ports, 10 GbE SFP ports, advanced security features, and advanced Quality of Service QoS , the DGS-3630 Series can act as core, distribution or access layer switches. 28-Port L3 Fully Managed Gigabit SFP Switch Features 28 Gigabit Ethernet Ports 24 10/100/1000 Mbps BASE-T Ports 4 Gigabit SFP Ports Static Routing Switching Capacity 128 Gb/s Managed Switch IEEE 802.3x Flow Control D-Link Green Technology Switch Security Port Security Up to 12K MAC addresses per port Broadcast/Multicast/Unicast Storm Control D-Link Safeguard Engine DHCP Server Screening Dynamic ARP Inspection IP Source Guard DHCP Snooping IPv6 Snooping Dynamic ARP Inspection DAI DHCPv6 Guard IPv6 Route Advertisement RA Guard IPv6 ND Inspection Duplicate Address Detection DAD ARP Spoofing Prevention L3 Control Packet Filtering Unicast Reverse Path Forwarding URPF Traffic Segmentation SSL SSH v2 BPDU Attack Prevention DOS Attack Prevention NetBIOS/NetBEUI filtering Access Control List Screens Traffic from Illegal MAC or IP Addresses Port Mirroring / Bandwidth Control Quality of Service QoS MTBF 280,612 Hours