Interface definition Interface definition of the whole machine CORE-PX30-JD4 provides rich interfaces, including : Power interface, 1 x USB3.0(device), 6 x USB2.0 (interface 4, seat 2), Ethernet, LVDS interface screen, TP touch interface, Screen voltage jump line interface, Backlight interface, WIFI antenna, Bluetooth antenna, Power button, MIC interface, Audio output (lineout), 3.5 mm headphone jack, RTC power interface, 12V power supply interface, IR interface, TF card slot, SIM card slot, Speaker interface, Recovery button, Debugging serial port, Industrial serial port (TTL), MIPI screen interface (single LVDS multiplexing), The details are as follows: Special interface description The HDMI interface and HUB1_USB3 in the MB-JD4-RK3328&PX30 baseboard are designed to support the rk3328 core board, so the PX30 core board cannot use these two interfaces.