Draytek VigorPro 5500 Series User Manual page 216

The following page will be shown automatically. You will find there are two devices
service added to your router. If you activated only one service before, it must be only
one service displayed here. In this case, DT-DT and DT-KL services are registered on
the VirgorPro website. However, DT-DT service is installed into the router at present.
Upgrade allows you to upgrade a new license for specified service provider (DT-DT
or DT-KL). Click the Upgrade button according to the license of provider (DT-DT or
DT-KL) you purchased to update a new license.
Apply allows you to adopt the anti-virus and anti-intrusion service that provided by
the selected service provider for your router. You can apply only one Provider with
AI-AV at one time.
5. Click Apply on the line with DT-KL service to activate that service.
6. Now, you have successfully switched the service provider for your router.
208 VigorPro5500 Series User's Guide