This product is an independent master LED display sending card built on a 4K2K@60Hz independent master control solution. A single unit loads up to 7.8 million pixels (multiple units can be cascaded without pixel-count restrictions), with 650,000 pixels per network port and a maximum width of 7680 pixels. Video and audio interfaces: 1x DP1.2 and 1x HDMI2.0 video signal input, plus 1x AUDIO audio input. On the output side, it provides 12 Gigabit network ports and supports 4 bidirectional duplex fiber transmissions. Communication and control options include 1x USB port, 1x serial port and 1x 100M network port. The device supports network loop backup and dual-master backup to improve large-screen reliability. Display and control features: supports multiple resolutions with user-defined resolution; supports ambient light sensor input for automatic brightness adjustment; supports active 3D display, electronic shutter 3D and continuous frame mode; supports host software monitoring of sending card operating parameters and status; brightness can be adjusted by button without a computer; supports Gigabit network bit error rate detection; supports brightness and chroma pixel-by-pixel calibration; supports HDR display; supports data inspection and SD card auto inspection, automatically repairing data after receiving cards are replaced on the large screen. Note: Some parameters in the OCR source (such as the input refresh rate list and certification test report wording) are partially garbled; please refer to the actual product and official documentation.