What This Product Does8-Port Gigabit Desktop Switch with 4-Port PoE provides the seamless network connection. It integrates 1000Mbps Gigabit Ethernet and 10/100Mbps Fast Ethernet network capabilities.How This Product Works4 of the 8 Auto-Negotiation RJ45 ports (port-1 to port-4) of the switch support Power over Ethernet (PoE) function. These PoE ports can automatically detect and supply power with those IEEE 802.3af compliant Powered Devices (PDs). In this situation, the electrical power is transmitted along with data in one single cable allowing you to expand your network where there are no power lines or outlets, where you wish to fix devices such as APs, IP Cameras or IP Phones, etc.Overload ArrangementTL-SG1008P has the priority function which will help protect the system when the system power is overloaded. If all PoE PDs power consumption is >= 53W, a priority will be arranged among the PoE ports, then the system will cut off the power of the lowest-priority port.