Either during the renewal or order process, you can make changes to your service. It is  possible to change the hardware components of the server (hard disk, RAM, number and type of processors), request multiple IP packages, installation of Firewall hardware, external USB disks, remote management cards and kvm over IP switch. 
 
You can purchase several versions of SQL Server licenses, as well as request the activation of a software control panel, with relevant add-ons.

Furthermore you can request to change your connection, changing the purchased
bandwidth.

The indicated customizations may vary depending on the model, type of machines and installed operating system.