In the case that it will be the only form of connection to the panel you would want to choose none for the connection type. This is because all accounts with have it as an available connection option to the panel and cannot be deleted as well.
When creating an account in DLS you will be unable to select PC-Link as a connection type through the drop down menu in the new account creation window.
This connection will allow you to communicate to the panel so that you are able to send programming to it, retrieve programming from it or be able to view or perform certain functions on the panel.
