TL-SF1008P is an 8 10/100M ports unmanaged switch that requires no configuration and provides 4 PoE (Power over Ethernet) ports. It can automatically detect and supply power with all 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 to where there are no power lines or outlets, where you wish to fix devices such as APs, IP Cameras or IP Phones, etc. TL-SF1008P has the priority function which will help protect the system by cutting off the power of the lowest-priority port when the system power is overloaded.