How do I get "AC" turned on on my Archer C1200? I only show "N" when I do a scan of available wifi signals with my NanoStation Loco M2 but show lots of "AC" available wifi spots at other locations. Wh

I keep having to reboot the router to get the USB drive to show back up on my network. The USB drive is a WD My Book 1140 3TB Firmware Version: 3.0.4 Build 20180122 rel.42880 (US) Is there a firmware