That is the number of search results...
My apologies for the late reply; I did not see your follow-up earlier. Nevertheless, I wanted to clarify that "40 product review results" refers to the number of search results found based on the words you searched for. In other words, there are 40 products in the Reviews portion of CNET that matched the terms "Iogear GUW2015VKIT Wireless USB to VGA Adapter Kit." If you look through those results, you'll see that two have a CNET editor's review while nine have user reviews and, in the case of user-reviewed products, the number of reviews is noted along with the blue star rating.
It's also useful to note that you can actually produce better search results by limiting the terms used for your search. For instance, searching for just the model number (GUW2015VKIT) returns the exact product you're looking for which, unfortunately, has not been reviewed by either an editor or fellow users on CNET.
I hope that helps clarify the search results. Please let us know if we can be of any more assistance.
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