To view and manage which computers are connected to your Syncplicity account, sign in to http://my.syncplicity.com, click on the Account tab and then the Computers tab.

All computers associated with your Syncplicity account will be displayed along with the date they were last online.

From this screen, you can also rename a computer to a different name or remove a computer that you are no longer using. To learn more about renaming and removing computers, read How do I manage computers connected to my account.