1、Mode 1: Three devices are connected at the same time, and the monitor displays the content of one device. Press the key, and the monitor displays the content of the next device. 2、Mode 2: One device is connected to three monitors. In the above use mode,3 monitors can not be displayed at the same time, only one of them can be displayed, and the key control can switch the next display 3、Bidirection Switch: Both modes of HD Multimedia Interface switcher can realize bidirectional switching, which is convenient for different scenarios. 4、4K 60Hz HD Quality: 3 in 1 Out HD Multimedia Interface switcher supports 4K 60Hz HD quality, plug and play, stable and reliable. 5、HD Multimedia Interface Port: Standard HD Multimedia Interface, no power supply, simple wiring. The input supports up to 3meters AWG26 HD Multimedia Interface standard cable length. Item Type: HD Multimedia Interface Switch Material: ABS Maximum Operating Current: 30mA Switching: Key Interface: HD Multimedia Interface Pixel: 4K, Backwards Compatible 1 x Switcher 1 x Instruction Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin