Abstract: A video apparatus has a connector for receiving a video signal and having at least a first pin carrying a first signal, at least a second pin carrying a second signal and at least a third pin carrying a signal indicative of which of the first signal and the second signal defines the video signal at a given point in time. The first pin and the second pin are coupled to a video circuit able to operate with at least two types of video signal. A detection circuit connected to the third pin determines a characteristic of the video signal based on the indicative signal, and control means responsive to said characteristic sends a control signal whereby the video circuit is forced to operate with one of said types of video signal.