Nick did a terrific job! He installed your AC 1200 Wi-Fi Range Extender and determined that the source of my problem was that an intermediate device (R60D – Fortinet Gateway Security Appliance) needed to be rebooted. My computers are now able to connect to my LAN both wired and wirelessly. My WiFi signal now tests out to 89 Mbps (downloads) and 91Mbps (uploads). Nick also gave me his phone number and his Hancock weekly schedule in case of future problems. Thank you very much for your help.