Tenda TEF1105P-4-63W 5-Port with 4 Port PoE Desktop SwitchIn the real project, AP or IP cameras are often installed outdoor or the higher position, which is also increases the risk of cameras and PoE switches impact by the lightning shock . The result is the individual equipment damaged, or lead to the whole local area network (LAN) paralysis. Tenda TEF11 series switches have the professional lightning protection design up 6 kv port and power supply thunder prevents , with two levels of protection design