Hi User,
Ports for Logging In to the AR Router
You can log in to the AR router through the console port, mini USB port, Ethernet port, and management port.
After the AR router is powered on, you can connect to the console port or mini USB port and enter the default user name and password to log in to the device through the CLI. Alternatively, you can connect to the management port and enter the default user name and password to log in to the device through the web.
After logging in to the device for the first time, you can configure Telnet or STelnet to connect to the Ethernet port for subsequent login through the CLI.
You can connect a user terminal serial port to the console port of the device or connect the user terminal USB port to the mini USB port of the device.
Figure 1-1 Mini USB port

Generally, a console port is marked with the CONSOLE silkscreen, and a management port is marked with the MGMT or Management silkscreen.
Figure 1-2 Console port
Figure 1-3 Management port


The mini USB port and console port cannot be used together. By default, the console port works.
What Is the Default Password for Logging In to the AR Router?
You can use the Default Account/Password Query Tool to query the default password of the device.
Default passwords for logging in to devices of different versions through the console port, mini USB port, or Telnet
For more details please visit the below link.
https://support.huawei.com/enterprise/en/doc/EDOC1100083329
Thanks