24 × Gigabit PoE ports, 2 × Gigabit SFP fiber optical ports. IEEE 802.3at/af standard. IEEE 802.3, IEEE 802.3u, IEEE 802.3x, IEEE 802.3ab, and IEEE 802.3z standard 6 KV surge protection for PoE ports PoE power management Gigabit network access Wire-speed forwarding Store-and-forward switching Solid high-strength metal shell