Ubiquiti unifi switch 8 Quick Start Manual page 15

Adopting the UniFi Switch
1. From the UniFi Controller dashboard, click Devices in the
left menu bar.
2. On the Devices screen, locate the UniFi Switch in the list
of devices under the Model column. To adopt the UniFi
Switch, click Adopt.
3. The System LED on the UniFi Switch will turn blue to
confirm that it has been successfully adopted.