USB over Network Server allows to share USB devices automatically each time a new device is physically plugged in.
To enable USB devices automatic sharing, on the Settings menu, click Preferences. Then go to Auto-Sharing tab and enable "Enable auto-sharing of USB devices" option.
There is a possibility to specify USB devices which should not be shared automatically.

Now, each time a new USB device is plugged into PC, it will be automatically shared (in case if it is not in the exclude list).