180° Rotation for HDTV : If using the HDTV as the screen, it allows you to rotate the screen 180°. You can install the TVs in an orientation with the thinnest edges. Input devices can support up to 4k, but output devices up to 1080P. If your remote doesn't work, check your input and output device’s resolution to 1080P and press it aiming at the IR button. | Easy Installation & Operation : Plug and play, no driver needed. A remote control is provided for your easy control, you can also push buttons on the controller directly. It does compatibe with the samsung TV. Please use the high-quality hdmi cable. Input supprots 4k, output only 1080P If the image blurs, please adjust the input and output resolution to 1080P. | Create Large 2 x2 Video Wall : 2x2 Video Wall Controller allows you to create eye-catching large format video walls and digital signage displays via LCD splicing screens. Up to 8 display modes for your choice. It can rotate for any mode and more easier than before Please choose the professional video wall instead of TV. Please use the HDMI to HDMI CABLE 19-1 connecting the TV instead of hdmi to DVI cable. | 4K@60Hz input and 1080P output : Both the HDMI input and output support up to 1920*1080P@60Hz display. Compatible with Computer, laptop, set-top box, DVD player can all be the perfect signal sources. Supported audio formats: PCM 2.0, not supported: Dolby Digital and DTS. When input devices is 4k, it only display 1080P. Please contact us by amazon question if you have any problem. | Independent audio settings : It has an individual audio port to connect speaker. As long as the input devices have the audio, the monitor will has the audio by this hdmi video wall controller 2x2 Feel free to contact us when you need help. Please use the high quality hdmi cable if it blinks or work seamlessly between TVs.