This mini portable HDMI amplifier switcher not only has the key-press-switching function， but also has the IR remote control and intelligent function. The 3 input to 1 output HDMI switcher can easily switch any one of the three routes high definition (support multiple resolution， the maximum resolution up to 4K * 2K) videos sources and high-quality digital audio to any one HD display， Monitor or projector with HDMI interface， and this switcher supports HDMI1.4b. These three input HDMI are auto switching. The multifunctional 5 x 1 Switcher Cable not only can reduce the cost， but also can save your time. It is perfectly compatible with notebook， HD-DVD， SKY-STB， for PS3， Xbox360， HD player， etc. it will bring you much fun and convenience.Note: This item does not include power adapter， you should buy it by yourself.Intelligent Function:When supplied with power， this switcher will select the power-on source device depending on the sequence automatically (input1>input2>input3).Once the source device is turned on or plugged in (should stay power-on mode)， the switcher will automatically select this source.Once the source device is turned off or pulled out， the switcher will automatically select the next power-on source depending on the sequence automatically (input 1>input2>input3).Features:Multifunctional on switching: intelligent or mechanical.IR extender receiver (included).IR remote device (included).Support HDMI1.4b， HDCP pass through. Support high Definition resolution 4K * 2K@30，1080p and 3D.Support 300MHz/3.0Gbps per channel bandwidth.CEC Pass-throughSupport 12bit per channel deep color，36 bit total.Support uncompressed audio such as LPCM (Linear Pulse Code Modulation). Support compressed audio such as， DTS Digital， Dolby Digital (including  DTS-HD and Dolby True HD）Automatic switching or manually press the select button. With compact portable design， and support plug and play. Specifications:Input DDC Signal 5 volts p-p (TTL)Maximum Single Link Range 4K * 2KOutput Video HDMI1.4bVertical Frequency Range 50/60HzVideo Amplifier Bandwidth 3.0Gbps/340MHzInterlaced(50&60Hz) 480i，576i，1080iProgressive(50&60Hz) 480p，576p，720p，1080p，4Kx2KOperating Temperature 0 ℃ to +70℃Operating Humidity 10% to 85 % RH (no condensation)Storage Temperature -10℃ to +85℃Storage Humidity 5% to 90 % RH (no condensation)Note: Specifications are subject to change without notice.Item color: BlackMain item size: 8.0 * 5.8 * 2. 0 cm / 3.15 * 2.28 * 0.79in Main item weight: 54g / 1.9oz    Package size: 14.2 * 10.8 * 3.4 cm / 5.59 * 4.25 * 1.34inPackage weight: 175g / 6.19ozPackage list:1 * HDMI amplifier switcher1 * IR extender receiver1 * IR Remote controller1 * Foam 1 * English User Manual