Features: 1. Push-button design, one key cut in seconds. Easily switch one of the three HDMI inputs, solving the trouble caused by repeated plugging and unplugging. No need to repeatedly plug and unplug between the three devices, office entertainment is more convenient. 2. No power supply, plug, and play, no external power supply, connect HDMI can be used normally. 3. 4K HD, smooth and lag-free. Support HD 4K video output, backward compatible. 4. Audio and video synchronization, full support for audio and video synchronization, shocking sound quality, easy-to-enjoy high-definition lossless music. 5. Compatible with a variety of devices, including display devices: monitors, large screen TV, and projectors; host devices: computers, laptops, and smart boxes. 6. Indicator light design. Light up that is working, the work status instantly knows, and the device is running at a glance. 7 new ABS environmental protection shell, lightweight, durable, dirt-resistant, lead-free and non-toxic, stable work. 8 HDMI output cable, comes with HDMI output cable, more convenient connection. Specifications: Name: 3 In 1 Out HDMI Splitter Switch: Button Core: high-performance conversion chip Case: ABS plastic Interface: HDMI standard interface Resolution: 4K * 2K (backward compatible) Color: Black Cable length: about 40cm Features: no power supply, plug and play / 3 into 1 out / key switch/audio and video synchronization Suitable for: computers, smart boxes, laptops Package includes: 1x HDMI Switcher Features 1: KVM Switches Features 2: HDMI-compatible 1 IN 3 Switcher Adapter Features 3: 4K HDMI-compatible Switcher Features 4: 4K*2K 3D Mini 3 Port HDMI-compatible Features 5: 4K 1080P Switch Splitter Features 6: 3 in 1 out Port Hub for DVD HDTV Xbox PS3 PS4 Features 7: HDMI-compatible Switch Adapter Features 8: HD 1080P Video Switcher Adapter