The GSD-604HP features “Port-based VLAN and Loop Protection” whose ports can be isolated from each other via one DIP switch. This can help to prevent the IP camera’s multicast or broadcast storm from influencing each other. Even more, the GSD-604HP can block and protect the loop network storm from the client, thus fully meeting the requirements of the IP surveillance systems and Ethernet projects. RJ45 Interface 6 10/100/1000Mbps Gigabit Ethernet ports 4 ports support 54V DC power to PoE powered device Power over Ethernet Complies with IEEE 802.3 af/at Power over Ethernet end-span PSE Up to 4 IEEE 802.3 af/at devices powered Supports PoE power up to 30 watts for each PoE port 65-watt PoE budget Auto detects powered device (PD) Circuit protection prevents power interference between ports Remote power feeding up to 100m Switching Hardware based 10/100/1000Mbps auto-negotiation and auto MDI/MDI-X Flow control for full duplex operation and back pressure for half duplex operation 9216 bytes jumbo packet size support Integrates address look-up engine, supporting 8K absolute MAC addresses Automatic address learning and address aging Supports port-based VLAN and loop protection Hardware LED indicators for PoE ready and LINK/ACT One 55V DC power jack Connections Total Ports 6 gigabit ethernet 802.3 af/at POE Ports 4 POE+ Fans No Fans Installation Switch Type Unmanaged Rack Ears None – small form factor 1U Rack Space 6.3 ? x 3.6 ? x 1.1 ? POE Specs Total Watt Capability 65 Watts Performance Port Speed Gigabit Backplane 12Gbps / non-blocking