D-Link 502G - DSL Router - EN User Manual page 35

Click on the OK button on the bottom of the window. A new screen appears:
The Save changes and reboot system? message prompt offers two option:
A. You can save the configuration changes and restart the device now by clicking
OK; or,
B. If you want to change the user name and password used to access the Web
Manager, select the "Continue and do 'Save Changes' later" option and click
OK, and go to the System Username and Password menu in the Maintenance
folder.
DSL-502G ADSL Router User's Guide
23