Hi WDNJSQ,
1. MiniUSB: If no console port is available on the PC, you can use a miniUSB cable to connect the USB port of the PC to the MiniUSB port of the device and log in to the device to perform basic configuration and management on the device that is powered on for the first time.
2. USB port: The USB flash drive is used to upgrade software and deploy services.
I hope it helps!