Trendnet TPE-103I is a Power over Ethernet (PoE) Injector that combines electrical power and a Fast Ethernet network connection to produce a PoE signal. It allows you to connect non-PoE devices to a PoE network, extending the reach of your network without the need for additional power outlets. With its compact size and easy installation, you can quickly create an integrated PoE and non-PoE network, saving costs and safeguarding your valuable network equipment.