These guides will take you step by step through the safe removal of what Dell consider to be the Customer Replaceable Unit (CRU) parts of a Latitude E7440 system. (CRUs are the parts of the system that shouldn't need an engineer to remove or replace.
In IIS Manager, select Default Web site or the Web site on which you are hosting your Microsoft-Server-ActiveSync virtual directory. In the Web site Home pane, in the IIS area, double-click SSL Settings. In SSL Settings, select the Require SSL check box. Require 128-bit SSL is optional.