D-LINK DSL-2750U modem router - How to Backup and Restore modem configuration - English

Hi
How to Backup and Restore D-LINK DSL-2750U modem configuration
Why you need to backup your modem router configuration?
The Backup Settings option allows you to save a file containing all your modem router's configuration settings, like wireless settings, port forwarding, WAN setup, DNS etc. to a file on your computer. This file can then be used to restore your settings if the router is reset to the Factory Default settings.