ONE FOR ALL SV1630 HDMI Switch allows three devices to one HDMI TV input. It combines three devices to the TV with only one visible HDMI cable. This reduces cable clutter behind the TV and / or increases the number of devices that can be connected. Power is supplied via the HDMI cable, so no additional power supply is required. There is no manual switching between channels is required, the latest activated device is always automatically selected. However, a manual switch by remote control is still possible, should this be necessary.