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28-Port Gigabit Ethernet PoE++ Surveillance Switches -24 x 10/100/1000 Mbps 4 x Combo 1000 Mbps (518W) -Switching Capacity 56Gbps -Maximum Forwarding Rate 41.67Mpps -MAC Address Table size – 8K -Packet Buffer 4.1MBits -Memory DDR3 128MB -Flash 32M Memory -PoE Power Budget 518W 90W Max per PoE port – Active PoE Port 1 to 8 – 30W max PoE port 9 to 24 -53.0 dBA Sound profile -DIP switches to enable QoS and Extended Mode 250M@10Mbps (DIP port 1 –8 – Web Port 1-24 control) -VLAN feature supported -Port based, 802.1Q Tagged, Auto Surveillance, Voice, Management, Asymmetric and VLAN Groups 128 Static Groups. Maximum 4094 VIDs. -L2 Feature available -Flow Control & HOL blocking prevention -Jumbo Frames up to 10,240 bytes -IGMP Snooping v1/v2 -802.3ad Supports 5 groups per device and 8 ports per group -G.8032 ERPS – Ethernet Ring Protection Switching -LLDP Link Layer Discover Protocol -Port Mirroring -QoS options – 4 Queues per port. With Strict model or Weighted Round Robin -Port-based Bandwidth Control(Rate Limiting) -Security features such as -D-Link Safeguard Engine, Traffic segmentation, Broadcast/Multicast and Unknown Unicast Storm Control. DoS Attack Prevention system. -Energy saving Green features -LED shut off, Port Shut off, System Hibernation, IEEE 802.3az EEE and time based PoE