[Plugged & Worked]-- Just plugged into the corresponding interface by using wires for the video source part and displaying part, then use 12V power adapter to connect it. After that, the distributor offer you real-time video output and stable performance. [1 Input to 4 Output]-- Designed with single input and four output which 1 video signal input could be equally transmitted to 4 video equipment for the same screen at the same time. [Good Choice]-- Equipped with better components, advanced circuit board, LED power indicator and compatible colour television system. It maintained the high definition after the video transmission through the splitter box. [Adjustable Level]-- This product could be adjusted to a variable level according to your favourite for different output requirements. The video source input be buffered and replicated into total of 4 video outputs with excellent signal strength and same high video quality maintained all the way for transmission. [Portable]-- You can