Yes, you can configure a WireGuard VPN with the UniFi UXG Pro. Here are the basic steps and details:

- You need to open the UniFi Controller interface and select the "Teleport & VPN" section in the "Settings" menu.
- In the VPN server section, you can create a new WireGuard VPN server and make the necessary settings such as network name, port (UDP 51820 by default) and subnet.
- You must then add a VPN client, download the configuration file and import it to the device that is to establish the connection.
- It is important that the port for WireGuard is forwarded on the upstream router if the UniFi Gateway is behind a NAT.

WireGuard provides a secure and powerful VPN connection and is officially supported on UniFi devices.