Video Wall Controller 4K 1 in 4 Out Support 2x2 1x2 1x3 1x4 2x1 3x1 4x1 HD Multimedia Interface TV Wall Processor Item Type: Video Wall Controller Material: Aluminum Alloy Input Signal: VGA: HD15 Connector and Link with 1 3.5 Sound Jack; Supports 640 x 480 85HZ to 1920 x 1200 60Hz HD Multimedia Interface: HD Multimedia Interface 1.4 (HDCP 1.4) DVI 1.0, HD Multimedia Interface Embedded Sound, Supports 3840 x 2160 30Hz DVI: DVI I Interface (24 Plus 5), Maximum Resolution Support 3840 x 2160 30Hz Video: Automatic Recognition of NTSC, PAL and SECAM, Connected to 1 3.5 Sound Interface  USB: 2.0 standard interface, can be inserted into the U disk, embedded sound; support for video, images, MP3, MP4, TXT Output Signal: HD Multimedia Interface Interface: 4 HD Multimedia Interface Outputs, Support 2x2, 1x1, 1x2, 1x3, 1x4, 4x1, 3x1, 2x1 Combined Mode; Support Customized 2 to 25 Output Signals; 3840 x 2160 30Hz, 1920 x 1080P 60Hz, 1280 x 720 60Hz; Video: 3.5 Sound Interface, Support for Left and Right Channel and Stereo, Synchronous Switching AV Signal Splicing Ratio: Simple Four Piece Splicing, Input Signal Support 90° 180° 270° Full Screen Rotation (Resolution 1920x1080p Or Below), The Output Screen Support 180° Mirror, Flip Control Node: IR, Case Key Remote Control Battery Specifications: 1 x CR2025 (Not Included)