D-Link DI-624 Owner's Manual page 61

Troubleshooting
8. Resetting the DI-624 to Factory Default Settings
After you have tried other methods for troubleshooting your network, you may
choose to Reset the DI-624 to the factory default settings. Remember that D-
Link AirPro products network together, out of the box, at the factory default
settings.
To hard-reset the DI-624 to Factory Default Settings, please do the following:
Locate the Reset button on the back of the DI-624
Use a paper clip to press the Reset button
Hold for about 10 seconds and then release
After the DI-624 reboots (this may take a few minutes) it
will be reset to the factory Default settings
Reset
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