Hikvision 4 P Giga Unmanaged HI-POE SW DS-3E0505HP-E3 gigabit PoE port, 1 gigabit Hi PoE port and 1 gigabit RJ45 port IEEE 802. 3at af bt standard for Hi PoE port (Max. 60 W PoE output). IEEE 802. 3at af standard for PoE ports (Max. 30 W PoE output). IEEE 802. 3, IEEE 802. 3u, IEEE 802. 3x, and IEEE 802. 3ab standard. 6 kV surge protection for PoE ports. Up to 300 m long range transmission. PoE watchdog to auto detect and restart the cameras that do not respond. L2, Unmanaged, 4 Gigabit RJ45 PoE ports,