Is it legal to provide a copy of published IEEE paper on my personal website? As the second author of a paper published by IEEE am I allowed to provide a download link to a copy of that paper on my own website? The official paper can only be found at the IEEE CS Digital Library behind a paywall. I'd like to provide free access to it.

Does it make a difference if free download links of the paper can already be found with Google Scholar? Should I prefer to link to the download on the university's publication directory instead of providing my own?
Yes, you can.

From https://www.ieee.org/documents/top10faq.pdf:


  Can an author post his IEEE copyrighted paper on his personal or
  institutions’ servers?  Yes. An author is permitted to post his IEEE
  copyrighted paper on his personal site and his  institution’s server,
  but only the accepted version of his paper, not the published version
  as  might be downloaded from IEEE Xplore.


Directly from their more recently updated paper policy (http://www.ieee.org/publications_standards/publications/rights/paperversionpolicy.html):


  The policy reaffirms the principle that authors are free to post the
  accepted version of their article on their personal Web sites or those
  of their employers. Posting of the final, published PDF continues to
  be prohibited, except for open access articles, whose authors may
  freely post the final version.