Interface definition Interface definition of the whole machine AIO-1808-JD4 provides rich interfaces, including : Power interface, 1 x USB3.0(host/device), 6 x USB2.0 (interface 1, seat 5), Ethernet, double an LVDS interface screen, TP touch interface, screen voltage jump line interface, backlight interface, WIFI antenna, bluetooth antenna, power button, MIC interface, 3.5 mm headphone jack, 12 v power supply interface, TF card slot, SIM card slot, interface extension buttons, speaker interface, recovery button, debugging serial port, industrial serial port (RS485,RS232,2TTL), RTC power interface, MIPI screen interface (dual LVDS multiplex), The details are as follows: in addition, customers can also customize the boards of relevant functional interfaces as required, as shown in the figure below: Special interface Software&Hardware: Not support LINE_IN/LINE_OUT, USB_HOST2, Only support SPEAKER One channel (Baseboard JD4-v1.0)