Welcome to the EC-A1688JD4 usage and development manual! EC-A1688JD4 Preface Overview OS Version Current Version of Document Revision History User Manual Introduction Development Board Wiki Linux Development Sophon SDK Development Interface Introduction Login Type-C Ethernet SSH Remote Desktop X11VNC Ubuntu HDMI Display Test Audio Interface Testing Network IP Configuration Ubuntu System WIFI WIFI Connection WIFI Hotspot USB Drive, TF Card, SSD Mounting USB Drive (SATA Hard Drive) Mounting TF Card Mounting PCIE SSD Mounting RS485/RS232 CAN Firmware Upgrade Preparation Upgrade Steps