The core of Military Class 4 is based on the essentials which increase your stability in the worst conditions. The humidity protection & high temperature protection ensure your system surviving each environment, no matter how harsh. The structure of the PCB limits EMI radiation. On top of that all the connectors have ESD protection in order to prevent short circuit. Enjoy the awesome 4K UHD video playback! MSI's 8 series motherboard that equips with HDMI port (s) supports the 4K UHD (2160p ultra-high definition) signal outputs to provide an unprecedented visual experience.