1. HDMI switch bidirectional HDMI switch. There is a switch button and two LED indicator lights at the top. 2. This button actually allows you to choose between two modes: whether to send signals from one device to two other devices, or in another way. This means that this switch is bidirectional 2. Connect a video source (laptop, TV box, DVD player) and transfer it to two different monitors. Note: You cannot watch two televisions at the same time. 3. Supports 3D, 1080P, 4K x 2K resolution, and HD audio, displaying color space without producing video playback noise, and enjoying the visual experience of a cinema at home. 4. Improved transmission efficiency and extended usage time. 5. Suitable for devices with HDMI ports. For example, PCs, laptops, gaming desks, XBox 360, XBox One, PS3, PS4, projectors, televisions, televisions, etc.