Interface definition Interface definition of the whole machine AIO-1684JD4 provides rich interfaces, including: 12V Power interface 2 x USB 3.0 2 x USB 2.0 2 x 1000Mbps Ethernet WIFI antenna HDMI 1.4 TF card slot SIM card slot FAN interface Power button Reset button Debugging serial port Industrial serial port (RS485, RS232, TTL) Mini PCIe interface (4G LTE) M.2 interface (5G Module) M.2 SATA interface (SATA3.0 SSD) The details are as follows: