For example,
- The headless configuration requires the help of device mode.
→ Headless Mode Flow in oem-config
Also, usb device mode provides a virtual console as 192.168.55.1. This is the default interface that sdkmanager is using to install sdk to the board.
- The initrd flash requires to use usb device mode. But since you are using nano board, it does not matter at this moment. This only affects TX2 and Xavier series.