HDMI Video 4k 60HZ with RS232 HD 8 Display Modes HDMI Input 4K and Output 1080P Features: 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. This controller allows you to create essentially one giant monitor spread across three separate TVs. You are able to open different windows on each monitor seamlessly being able to hop from app to app to app. NO any loss of resolution. This would be the ideal set up for anyone looking to create a wall display, or someone who is very engaged On a computer. It provides access to nearly limitless information at a single glance. 4K 60Hz input and 1080P output:Both the HDMI input and output support up to 1920 x 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. The versatility with display and RS232:The multiple display option allows you to set up individual screens and turn them into one viewing monitor for display. This also works for setting up for game play and work as well, being able to have multiple displays if you choose for whatever you needs are at the moment. It supports 2x2 3x1 4x1 2x1 1x1 1x2 1x3 1x4 mode. You can use the laptop to choose the mode by function RS232. 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 Specification: Support 1 HDMI input Support input HDMI 2.0 Support 4 HDMI outputs Support input 4K60HZ,and lower resolution Support output resolution 1920x1080P60 Support multiple splicing modes, easy to operate, plug and play Operation steps STEP 1: Connect hdmi source to hdmi input with HDMI cable,connect hdmi output to TVs. STEP 2: Connect 12V power adaptor. STEP 3: Set up splicing mode by the MODE button on the unit or remote controller. Package includes: 1 x 2X2 tv wall controller 1 x Power adapter 1 x User 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.