Widely Used: desktop or rackmount placement, widely used in home/business/project PoE network, such as POE cameras, POE AP, Computer Networks devices, switch and router data transmission etc. Smart Heat Dissipation: Using 2 industrial-grade fans, intelligent design, automatic start and stop according to the power used, automatic adjustment of the speed, more energy saving and extended use time. Easy to Use: Unmanaged Plug and Play, just plug in the power cord, connect the ethernet cable to your device, automatically detect powered devices and supply PoE power to the network, can be used without configuration. IEEE802.3af/at/bt 400W: All ports 1-48 support IEEE802.3af/at PoE standard max 30W, port 1-2 also support IEEE802.3bt max 90W, built-in power supply, the whole machine supports 400W *Please note: it will not supply power to passive 24V PoE and NON-PoE devices.*. Gigabit Ports: 48 gigabit ethernet ports, 2 Gigabit SFP, switching capacity is 112Gbps, each port can reach 1G rate at the same time, with higher data throughput. 8K Mac address table, more devices can be connected and can be used in large networks.