About automatic device discovery

Automatic device discovery allows you to automatically add hardware devices to your system as soon as you connect these to your network. When you enable automatic device discovery, your system configures and sets up hardware devices automatically without the need for any user interaction, making the hardware devices instantly accessible in XProtect Smart Client after the automatic installation has completed.

Note that:

Not all hardware devices support automatic device discovery.
Hardware devices respond differently to automatic device discovery. The system adds some hardware devices (such as Axis models P3301 and P3304) to the system automatically, while you must turn off some devices from other vendors (such as Sony models SNC-EB520, EM520 and E521) and back on again before they are automatically added to your system.
If your system is not online, remember to activate your hardware device licenses offline.