The HDMI splitter distributes an Ultra-HD HDMI signal (4K) to 2 HDMI devices such as TV, monitor, projector or AV receiver. With the so-called "Pigtail" , a permanently attached HDMI cable ,you connect the VSP01204 splitter directly to the HDMI output of the source. The connection to the two displays you make with 2 usual HDMI cables. The HDMI source also provides the power supply via HDMI, so in most cases you don't need another power supply. If your device does not provide enough power, insert the included adapter cable and use a free USB socket or USB power supply to power it. The HDMI source will automatically provide a signal compatible for both displays. Special feature: The HDMI splitter has an integrated scaler. When a 4K signal is present and both a 4K TV and a Full HD display are connected, the splitter delivers a downsampled 1080p image to the Full HD display. Nevertheless, there is Ultra HD at the other output. This has the great advantage that you can enjoy Ultra HD on the TV, for example, even if the second device can only do Full HD.