The Matrix HDMI Switching Splitter offers maximum convenience when you need to connect multiple HDMI sources and displays together. It features 4 HDMI input source ports and 4 HDMI output display ports. Each of the 4 sources can be directed to any of the 4 displays using the supplied remote control. It\'s an ideal solution for multiple HDMI distribution use in retail product demonstration, training and public display applications. Note on using DVI equipped devices with the HDMI 8x8 Matrix SwitchTo connect devices equipped with DVI connections, you can use either modular DVI/HDMI adapters or DVI/HDMI adapter cables. Be aware that DVI is a \"video only\" interface - no audio signals will be switched by the HDMI Switch Remote when using DVI devices! Package Contents: HDMI 4x4 Matrix IR Remote Control (inc battery) 5V 6Amp PSU and UK 3 pin plug to IEC cable Mounting brackets & screws User manual