What if a conference is not ranked but IEEE sponsored
Checking on IEEE Xplore, it certainly appears to be a real conference, and if you search for it on plain Google Scholar (rather than Scholar metrics), you do find publications from it.  Scholar Metrics has a much tighter filter than general Scholar, and even some significant conferences don't show up in whatever arbitrary black-box algorithm Google uses to generate it.

In this case, however, this conference appears to be rather low impact, and also has a major red flag: its call for papers is about everything and nothing. Thus: legit, but not a particularly good choice of venue unless you have some particular reason to want to talk to the people who go there.