This compact little unit allows you to connect the output from a single HD source, such as a set top box, DVD player or computer, to four separate HDMI or DVI equipped displays. Ideal for demonstration, education, training, advertising and presentation purposes. Note on using DVI equipped devices with this HDMI Splitter To 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, audio signals are not supported when using DVI devices! Package Contents: 4 Port HDMI Splitter Multi Country PSU 5V 1Amp User Manual