28-Port 2.5G Multi-Gigabit PoE++ Smart Managed Switch with 4 x 10G SFP+ Ports - 24 x 100/1000/2.5GBASE-T PoE++ ports - 4 x 10G SFP+ ports - Ports 1 to 24 compliant with both IEEE 802.3af/at/bt (90W) - PoE power budget of 475W - Enhanced Security Features including Access Control Lists (ACLs), D-Link Safeguard Engine helps the CPU resist broadcast/multicast/unicast flooding, Port Security supports up to 64 MAC addresses per port - 2 x Smart Fan. 5-speed smart fan design automatically adjusts according to device operating temperature - Quiet mode or noiseless Fan Off mode - Multi-lingual Web UI - Centralised Management with D-Link Nuclias Connect and D-Link Nuclias Connect Hub (version 1.3.0 or later) - Built-in SNMP MIB for remote NMS (D-View 8) - Static routing - Auto-surveillance and Voice VLAN - Dual software images - Dual configuration files - 6kV surge protection on all 2.5-Gigabit Ethernet access ports - Ideal for SMB and MDU applications - Small footprint to fit inside structured wiring media enclosures"