The F4 board is powered by Rockchip RK3399, a low-power, high-performance processor that integrates dual-core Cortex-A72 1.8GHz and quad-core Cortex-A53 1.4GHz. The ARM Mali-T860 GPU supports OpenGL ES1.1/2.0/3.0/3.1, OpenVG1.1, OpenCL, and DX11, enabling a perfectly smooth hardware decoding of 4k and 1080p resolution videos. With a variety of on-board display interfaces, multiple I/O and expansion options, as well as a rich set of development kits, this board can be quickly applied to the security and access control sector.