D-Link ShareCenter DNS-320L User Manual page 252

Section 4 - Configuration
The Camera Search screen appears blank if the Camera Setup Wizard was
unable to find your camera. Make sure you have either connected your
camera to the router, or you have enabled DHCP on your router to detect
your camera.
If you have set up your camera properly, you will see the words, Search
Complete in red. The camera details will appear in the Camera Search box.
D-Link ShareCenter DNS-320L User Manual 246