Have bought me the switch, because my TV has only one HDMI input and I could connect only one device so forever, so always had to reposition. With the switch I now have a Blueray player and the Playstation connected simultaneously. If I anschalte one of the two devices, the picture for this device is automatically displayed. Turn it to the other device, the switch changes to this device. The switch also has a button for manual switch, but I will probably not need.