4 Gigabit PoE Ports: Include 1 PoE In, 3 PoE Out, 10/100/1000Mbps speed. POE transmission distance 100 meters. IEEE 802.3 af/at: All ports support this standard PoE, Input Max 30W, Output Max 24W, Average 8W per port. PoE Voltage 44-57 Vdc. PoE pin: Input, 1/2 (+), 3/6 (-), 4/5(+), 7/8(-); Output: 1/2 (+), 3/6 (-). Unmanaged Plug & Play: Support power detection function, automatically detect devices, just plug in the ethernet cable, connect directly to the device, without configuration. Easy Installation: No need for additional power adapter, powered by POE network. Support wall mount and din rail mount, small size, save space, suitable for more positions Widely Used: Support 3-level cascading, can connect poe AP, camera, phone and other POE devices, increase POE coverage at low cost