The CANedge2 provides a configurable 5V power output via the 2nd port. This adapter lets you use this to easily power a 3G/4G USB WiFi router via this 5V output - simplifying cellular deployment use cases.
Additionally, the adapter provides an open DB9 female connector, making it easy to connect a CANmod sensor-to-CAN module. The cable provides a 5V power supply for the CANmod - while enabling the CAN communication from the CANmod to be recorded by the CANedge2 via the 2nd port.
You can of course easily combine this adapter with our DB9-DB9/DB9 Y-splitter to e.g. daisy chain CANmod modules.
Note: The connection to the USB adapter purely provides power and ground for the USB hotspot (the CANedge2 connects to the 3G/4G router via WiFi, not through the cable).