Interface definition Firefly-RK3399 Interface Definition Firefly-RK3399 provides a wealth of interfaces, including: Power interface, USB3.0 HOST, Digital optical fiber, Type-C, HDMI, Ethernet, WIFI antenna, Bluetooth antenna, Dual MIPI camera, Fan interface, Reset button, Power button, Silicon wheat, Audio input and output, RTC power interface, Infrared reception, TF card slot, USB2.0 HOST, Recovery key, EDP screen interface, DVP camera interface, Debug serial port, PCIE interface, Battery power input port, MIPI screen interface, MINI-PCIE. In addition, there is a row of extended interfaces. Specifically as follows: