Thank you for viewing. 1. Intelligent automatic switching. There are three input ports, and if there is a signal in one input port, the channel will be automatically selected. If there are signals in two or more input ports, the default order is input1-input2-input3. You can manually press the select button to choose one of them. 2. Excellent compatibility, supports 1080P, and is suitable for DVD, STB, PS3, PC, DV, DLP video projectors, and other HDMI devices with HDMI interfaces. 3. Power-saving design, no external power supply required. 4. Small size (60mm*60mm*15mm), does not take up space. 5. The status indicator light allows you to grasp the trend of each port in real time. The input port with the indicator lit is the currently selected HDMI input port, with three HDMI inputs and one HDMI output. This HDMI amplifier auto switcher has many features that provide excellent performance. These features include: (1) Supports 12-bit deep color, full 1080p (2) Compatible with 3D display devices. (3) Multi-function switching: automatic or mechanical (4) Compatible with HDMI 1.3b. (5) High performance up to 2.5Gbps (6) Supports 25-meter HDMI cables on both ends of the switcher (7) Maintains high-resolution video - easily achieves beautiful and clear HDTV resolutions up to 1080p, 2k, 1440p graphics and computer resolutions up to 1920 x 1200. Automatic and manual switching.