D-LINK 28-Port 10G Multi-Gigabit PoE++ Smart Managed Switch

28-Port 10G Multi-Gigabit PoE++ Smart Managed Switch with 4 x 25G SFP28 Ports 24 x 100M/1G/2.5G/5G/10GBASE-T 60W PoE++ ports 4 x 10/25G SFP28 ports Switching Capacity 680 Gbps Ports 1 to 24 compliant with both IEEE 802.3af/at/bt PoE power budget of 470W Support Perpetual PoE, Fast PoE, Time-based PoE. PD Alive and Auto PoE PD Discovery 5-speed smart fan design automatically adjusts according to device operating temperature Layer 3 Features: IPv4 ARP Entries 4096 (256 Static ARP), IPv6 ND Entries:1024 (128 Static ND Entries), IP Interface (Supports 128 interfaces), Gratuitous ARP, Static Route, IP Helper Layer 2 Features: IGMP Snooping, MLD Snooping, Flow Control, Port Mirroring, 802.1AX/802.3ad Link Aggregation (Max. 32 groups per device, 8 ports per group), Loopback Detection, Spanning Tree Protocol: 802.1D STP, 802.1w RSTP, 802.1s MSTP, Ethernet Ring Protection Switching (ERPS), 32K MAC address table and Jumbo Frame up to 12KB Quality of Service (QoS)