Hi,
The USB port on a Huawei device cannot be used for file transfer. It is used for USB-based Deployment
or automatic upgrade(for some firewall). By default, if a device has no configuration file, the USB-based deployment function is always enabled. If t any configuration is saved, the USB-based deployment is disabled. And the automatic upgrade function is disabled by default too.
The commands are as follows:
[sysname]set device usb-deployment disable
[sysname]undo autoupdate enable
Any further questions, please let us know.