The PSE−4 is a four−way PoE (Power−over−Ethernet) injector that supports 4K UHD video. The unit provides power remotely over Ethernet to up to four devices capable of acting as PoE acceptors, (for example, the DIP−20, where it might be difficult to connect an external power supply). This allows a single HDBT LAN cable to provide both data and electrical power to compatible devices.