This is an HDMI splitter. It allows you to display the same screen on various video output devices. If you're a VJ at a club, you'll have outputs at the venue, but if you want to practice on your own or hold a DJ event at a community center, having one of these as a VJ will help with the operation. I'm selling the splitter with three HDMI output cables and a flat HDMI L-shaped adapter for input. The scratches on the main unit in the photo are just from the original protective film, which should come off cleanly.