Please note that 1): If you choose to subscribe to an appliance capacity other than your currently installed appliance capacity (License Level) you should REINSTALL CacheGuard-OS on your machine or purchase a new CacheGuard-VE (Virtual Edition) appliance. 2): Reinstalling CacheGuard-OS on your machine may involve additional costs and impact the performances of your appliance. Please check available resources on your machine prior to any reinstallation.