Mini USB console seems stuck or disabled after switch was reset to factory defaults.

Some devices have two console ports: an RJ-45 console port and a Mini-USB Type-B console port. You can configure and manage the device using either port.

The RJ-45 console port is the active port by default on EX2300, but the Mini-USB Type-B console port needs to be activated before use.

By default, the RJ-45 console port is the active port and we must first configure the Mini-USB Type-B console port as the active port before it can be used to connect to the switch.

Use this command (and then commit the config) to configure the mini-usb console port and then reboot the device:

[edit]

user@switch# set system ports auxiliary port-type mini-usb

Please check below KB's for more information on HW connections & console ports information.
Configuring the Console Port Type
Connect an EX Series Switch to a Management Console Using the Mini-USB Type-B Console Port

2023-09-07: initial publication