Just bought these wireless AC gadgets few weeks ago for our home office. Reason for AC connection is its distance apart of installation. Tried to test it first for few meters away with little obstruction but it always disconnected and most of the times it was not able to connect at all. Using my AC phone, I also gets disconnection and always switching to N mode. Sorry if I place my comment here and not on 880L, but I get frustrated for unable to install the camera on a distant location. For N mode, I didn't get any disconnection at all. Followed the guidelines in setting up the router and WiFi gadget but didn't have any result at all using AC. Any ideas?