You shouldn't have been able to buy that on it's own, It's only meant to be available to (unsurprisingly) system builders. but that aside, it *might* have a years subscription to the update service that's activated on accepting the license agreement after installing..
"Some Symantec System Builder Edition Products include an annual subscription to protection updates that are enabled upon acceptance of the end user license agreement. "
Taken from
http://www.symantec.c...ng/system-builder.jsp
Try it and see what happens, the worst that will happen is you won't get the subscription license, in which case just remove it again.
http://us.norton.com/...0710133834EN&ln=en_US