Business-class personal computers *ARE* impacted.
There is an NMap module for AMT now:
https://svn.nmap.org/nmap/scripts/http-vuln-cve2017-5689.nse
http://thehackernews.com/2017/05/intel-amt-vulnerability.html
https://www.ssh.com/vulnerability/intel-amt/
https://github.com/bartblaze/Disable-Intel-AMT
