D-Link DNS-726-4 - Network Video Recorder Standalone DVR Product Manual page 25

Secton  - Configuraton
When formatting of the drive completes, the NVR will prompt the user to restart. A restart countdown screen will appear,
and when the restart is complete, the login screen will appear:
Press Restart to restart the NVR.
Type admin for the username and
leave the password field blank.
Note: After logging in to the NVR for the first time it is recommended to add a password to the admin account. (See page 40 for details.)
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