You do not need a physical USB iLok dongle for this product. You only require an iLok.com account.
WHAT'S AN iLOK ACCOUNT AND WHY DO I NEED ONE?
Source Elements software requires that you have an iLok account for copy protection. Most software doesn't require you have a physical iLok, but has the option for you to use a "Machine License" which does not require an actual iLok present.
I DON'T HAVE AN iLOK ACCOUNT
You will need to create one - this only takes a moment. Once you have your new iLok.com account username, come back to this page to obtain your Software trial.