D-LINK DGS-1520-28MP 20 PORTS GE POE + 4 PORTS 2.5 GE

20 x 10/100/1000BASE-T PoE Ports, 4 x 2.5GBASE-T PoE Ports, 2 x 10GBASE-T Ports and 2 x 10G SFP+ Ports Smart Managed Switch- 20 x 10/100/1000BASE-T PoE Ports- 4 x 2.5GBase-T PoE ports- 2 x 10GBase_T Ports- 2 x 10G SFP+ Ports- Switching Capacity 140 Gbps- PoE Power Budget 370W, 740W (with RPS)- Physical Stacking up to 8 units per stack. Hybrid Physical Stacking Bandwidth of 80Gb. Ring or chain Topology- Advanced L3 features RIP/RIPng, OSPF, IGMP v1/v2/v3, MLD v1/v2, PIM-SM/DM/SSM, Static Route- L3 Routing Supports 1024 hardware routing entries shared by IPv4/IPv6, L3 Multicasting- Virtual Router Redundancy Protocol (VRRP) and Policy-based Route (PBR)- Advanced L2 features RSPAN and Selective Q-in-Q, Spanning Tree Protocols: 802.1d STP, 802.1w RSTP, 802.1s MSTP, BPDU Filtering, Root Guard, Loop Guard, Ethernet Ring Protection Switching (ERPS), HOL Blocking prevention, MAC Address Table Size: Up to 16,384 Entries per device and Jumbo Frames up to 12.288 Bytes- Quality of Service (QoS) - Queue Handling, Congestion Control, Policy Map, Bandwidth Control, Three Colour Marker- Access Control Lists (ACLs)- VLAN Asymmetric VLAN, Private VLAN, Auto Surveillance VLAN, Voice VLAN, GVRP- Advanced Security: Port Security, D-Link Safeguard Engine, DHCP Server Screening, 802.1X port-base Access Control, traffic segmentation, RADIUS and TACACS+ Authentication- Redundant Power Supply (RPS) support- Management: Web based management and Full CLI, D-Link Network Assistant (DNA), Zero Touch Provisioning (ZTP)- Security: SSH, SSL, Port security (up to 64 MAC addresses per port), DHCPv6 Guard, Broadcast/Multicast/Unicast storm control, IP Inspection, (IP source Guard), Duplicate Address Detection (DAD), D-Link Safeguard Engine, DoS attack prevention- MTBF 333,946 hours- Acoustic 57.1 dB(A)- Weight 4.29 kg- 19" Rackmount Installation. Dimension 441x308.5x44mm - #Smart Switch