Welcome to AIO-1684XQ Manual AIO-1684XQ Preface Overview OS version Document current version Revision history Quick Start First use Product Overview Accessory List Remote Network Login Serial Terminal Access Power Off Serial debug Debugging using DEBUG port Upgrade Firmware Use TF card to upgrade firmware Preparation Upgrade steps Indicator status Upgrade and downgrade between old and new firmware How to tell if the MCU firmware is new or old? Upgrading MCU firmware Downgrading MCU firmware Upgrading or Downgrading SOC firmware Linux Sophon SDK development Sophon SDK Driver GPIO LED RELAY SATA RTC UART Introduction Debug Accessories Serial port module USB to TTL serial port module Questions and answers FAQs Certain USB3 ports do not support USB2.0 devices. 5G Compatibility with USB3.0 and SATA IP configuration of the ethernet interface What is the default username and password of the system? What should I do if the startup is abnormal and the cycle restarts? Hardware resources Interface definition Interface definition of the whole machine 4G Module Antenna Connection Hardware documents