L2, Unmanaged, 24 Gigabit RJ45 PoE ports, 2 Gigabit RJ45, 2 Gigabit SFP uplink ports, 802.3af/at/bt, port 1-4 support Hi-PoE 90w, PoE power budget 370W, ports 21-24 support up to 300meter, 6KV surge protection, supports POE watchdog, port isolation