You can see the other “connection files” available, by selecting the + sign, but according to this thread: (Google Scholar Connection File? - #12 by kam59) I believe the answer is still the same as circa 2008 (I copy below the answer from that thread given in 2013 from a Thompson developer).
“EndNote is a z39.50 browser, which means it can connect to z39.50 servers. Google Scholar doesn’t have a z39.50 server, so there is technically nothing to connect to at this time. As soon as that is possible, we will be all over it, but until then, one must use their direct export to EndNote feature, which is the next best thing…”