The Accell UltraAV HDMI 4-2 switch is ideal for controlling up to 4 HDMI audio/video sources. The switch accepts output from up to four HDMI devices including a DVD player, personal video recorder, gaming console and a set-top box. It allows the transmission of an audio/video signal from a single source to 2 HDMI enabled devices, such as a TV and projector, at the same time. Simply select the audio/video source with the included remote control. If only one source is turned on (active), the smart-switch technology automatically switches to the active source. The UltraAV switch carries both multi-channel audio and high-definition (HD) digital video in resolutions of up to 1080p. Fully compatible with HDCP devices and compliant to the HDMI 1.2a specification, this HDMI switch also works with personal computers and DVI enabled devices when using an optional DVI adapter or HDMI to DVI cable.