Consumer Electronic Control (CEC) is bidirectional serial bus that allows components to control each other across an HDMI cable. You've probably already heard of this system without knowing it as each manufacture gives it its own name, for example 'Bravia Sync' from Sony, 'Kuro Link' from Pioneer and 'SimpLink' from LG. With the new kwikwai unit you can control your AV system from Ethernet with CEC replacing stick on IR emmiters for example. The unit also bridges CEC to USB and RS232 Serial. You could, for example, send a text string to the OSD of your TV, perhaps to show the name of a caller phoning you or that there's movement outside...