The DPE-301GS PoE splitter is used with end devices such as wireless access points,IP cameras and VoIP phones that don't natively support PoE,but rather require DC power input. It receives PoE power on a network cable from a PoE switch or midspan injector,and splits the Ethernet and DC power into two separate cables. One cable provides the DC power,and the other cable provides the Ethernet signal. The DPE-301GS PoE splitter has two 10 / 100 / 1000 RJ-45 ports. One port is for PoE input,which is the network connection and is usually connected to a remote PoE switch or injector. The other port is for LAN output,which is the connection that provides the Ethernet signal to the end device.