L2, Unmanaged, 4 Gigabit PoE ports, 2 Gigabit SFP Uplink, 802.3af/at/bt, port 1 support Hi-PoE 60 W, power budget?110 W ( based on power supply, power supply unit not included ), ports 3-4 support up to 300meter, 6KV surge protection, supports POE watchdog, port isolation, -40~75C, DIN rail